Data.txt
Patient_number Disease_duration Improvement
1 1 40
2 1 90
3 3 30
4 2 30
5 1 80
6 5 60
7 1 10
8 4 -10
9 2 50
10 6 40
11 1 60
12 4 0
13 2 50
14 2 100
15 3 20
16 3 70
17 5 -30
18 3 20
19 1 40
20 6 0
Question.docx
· PLEASE ANSWER QUESTIONS FROM (a) to (f)
· PLEASE USE R STATISTICAL SOFTWARE TO ANSWER ALL QUESTIONS. NO MANUAL CALCULATION ANYWHERE.
· INCLUDE ALL THE NECESSARY CODES
· INCLUDE ONLY THE RELEVANT OUTPUTS FROM THE SOFTWARE.
· ALL PLOTS SHOULD BE PROPERLY LABELLED. (X-AXIS, Y-AXIS, TITLE, ETC.).
· PLEASE GIVE PROPER EXPLANATION FOR THE STEPS AND CONCLUSIONS WHEREVER APPLICABLE
Anti-Anginal Response against Disease History
Treadmill stress tests were applied to patients with angina pectoris before and 4 weeks after once-daily dosing with an experimental anti-anginal medication. The main objective for carrying out this study is to check if the improvement in exercise duration is dependent on the patient’s disease history. This data file represents the disease duration time (in years) since initial diagnosis and percent-improvement in treadmill walking times.
QUESTIONS :
(a) Identify the response and the explanatory variables with proper reasoning
(b) Check graphically if the dependency between “improvement” and “disease duration time” can be considered to be linear.
(c) Now, use a formal test of hypothesis to check for the linear relationship in part (b) and draw appropriate conclusion
(d) How does the disease duration effect the percentage improvement in exercise duration
(e) What assumption did you make to carry out the testing in part (c). Is there any other assumptions required to formulate a linear model for “improvement” and “disease duration time”
(f) Check all the model assumptions made in part (d) graphically and comment on the violation or non violation of the model assumptions with proper reasoning
Patient_number Disease_duration Improvement
1 1 40
2 1 90
3 3 30
4 2 30
5 1 80
6 5 60
7 1 10
8 4 -10
9 2 50
10 6 40
11 1 60
12 4 0
13 2 50
14 2 .
This document provides a sample of multiple choice questions that appear to be from a final exam for a business research methods course (RES 341). The questions cover a range of topics in business research including research methods, data analysis, probability, and statistics.
This document contains 30 multiple choice questions that appear to be from a final exam for an RES 341 research methods course. The questions cover a range of topics in research methods including experimental design, measurement scales, probability, descriptive and inferential statistics, hypothesis testing, and statistical process control.
1. US Census statistics show that college graduates make more than $.docxelliotkimberlee
1. US Census statistics show that college graduates make more than $254,000 more intheir lifetime than non-college graduates. If you were to question the validity ofthis observation, what would be your basis for doing so?
A. Definition of a college graduate
B. Work lifestyles of the population
C. Defining “lifetime”
D. How the Census was taken
2. The average age in a sample of 190 students at City College is 22. As a result of this sample, it can be concluded that the average age of all the students at City College
A. must be more than 22, since the population is always larger than the sample
B. must be less than 22, since the sample is only a part of the population
C. could not be 22
D. could be larger, smaller, or equal to 22
3. Since a sample is a subset of the population, the sample mean
A. is always smaller than the mean of the population
B. is always larger than the mean of the population
C. must be equal to the mean of the population
D. can be larger, smaller, or equal to the mean of the population
Use the following situation for Questions 4-7. Michael, Inc., a manufacturer ofelectric defibrillators, is a firm that makes 50 types of electric defibrillators . Thetable below shows the price distribution of the defibrillators .
Price (In $) Number of Defibrillators
100 – 130 8
140 - 170 12
180 - 210 20
220 - 250 10
TOTAL 761.22
Select from the following choices for Questions 4-7. Use letter only in the blank.
A. 32 B. 50% C. 20 D. 30 E. 16% F. 10 G. 60% H. 50
4. How many defibrillators have a price of at least $180?__ D. _____
5. What percentage of the defibrillators has a price of at least $180? ___%___
6. What percentage of the defibrillators has a price of less than $140? ___ E. __
7. How many defibrillators cost at least $140 but no more than $210? __ A. ____
8. Temperature is an example ofa quantitative variable
A. a qualitative variable
B. a quantitative variable
C. either a quantitative or qualitative variable
D. neither a quantitative nor qualitative variable
Use the following situation for Questions 9 and 10.
The following frequency distribution shows the frequency of outbreaks of the11 virus (statistics flu) for the following households in a small rural community.
Households 1134 406 168 41 25 12 : 1786
Outbreaks 0 1 2 3 4 5
9.
Use the frequency distribution to construct a probability distribution by filling in
the blanks below.
x 0 1 2 3 4 5
P(x) P(0) = P(1) = P(2) = P(3) = P(4) = P(5) =
10. Compute the mean and the standard deviation and select from the following the appropriate interpretation of the results (select best response)
A. A household on the average has 0.9 outbreaks with a standard deviation of.6 outbreaks
B. A household on the average has 0.6 outbreaks with a standard deviation of12 outbreaks
C. A household on the average has 0.9 outbreaks with a standard deviation of.9 outbreaks
D. A household on the average has 0.6 outbreaks with a standard deviation of.9 outbreaks
Use the following situ.
The document contains a practice exam for a business research methods course. It includes 30 multiple choice questions covering topics like research methods, statistical concepts, probability distributions, sampling, and ethics. The questions assess understanding of key business research concepts and techniques.
The document contains a practice exam for a business research methods course. It includes 30 multiple choice questions covering topics like research methods, statistical concepts, probability distributions, sampling, and ethics. The questions assess understanding of key business research concepts and techniques.
This document contains information about downloading a tutorial on diversity between Hispanics in America from a provided link. It also contains sample data and questions about statistics, probabilities, hypothesis testing, and regression analysis related to business scenarios around customers, fire department response times, battery life, radio listenership, mail delivery, employee benefits, and airline staffing.
The document provides information about a final exam for RES 341, including multiple choice questions and answers regarding statistics concepts such as confidence intervals, control charts, sampling, and hypothesis testing. It also provides textbook price and sales data to solve problems related to measures of center, variation, and distributions.
The document provides information about a final exam for RES 341, including multiple choice questions and answers regarding statistics concepts such as confidence intervals, control charts, sampling, and hypothesis testing. It also provides textbook price and sales data to solve problems related to estimating means, variances, and probabilities.
This document provides a sample of multiple choice questions that appear to be from a final exam for a business research methods course (RES 341). The questions cover a range of topics in business research including research methods, data analysis, probability, and statistics.
This document contains 30 multiple choice questions that appear to be from a final exam for an RES 341 research methods course. The questions cover a range of topics in research methods including experimental design, measurement scales, probability, descriptive and inferential statistics, hypothesis testing, and statistical process control.
1. US Census statistics show that college graduates make more than $.docxelliotkimberlee
1. US Census statistics show that college graduates make more than $254,000 more intheir lifetime than non-college graduates. If you were to question the validity ofthis observation, what would be your basis for doing so?
A. Definition of a college graduate
B. Work lifestyles of the population
C. Defining “lifetime”
D. How the Census was taken
2. The average age in a sample of 190 students at City College is 22. As a result of this sample, it can be concluded that the average age of all the students at City College
A. must be more than 22, since the population is always larger than the sample
B. must be less than 22, since the sample is only a part of the population
C. could not be 22
D. could be larger, smaller, or equal to 22
3. Since a sample is a subset of the population, the sample mean
A. is always smaller than the mean of the population
B. is always larger than the mean of the population
C. must be equal to the mean of the population
D. can be larger, smaller, or equal to the mean of the population
Use the following situation for Questions 4-7. Michael, Inc., a manufacturer ofelectric defibrillators, is a firm that makes 50 types of electric defibrillators . Thetable below shows the price distribution of the defibrillators .
Price (In $) Number of Defibrillators
100 – 130 8
140 - 170 12
180 - 210 20
220 - 250 10
TOTAL 761.22
Select from the following choices for Questions 4-7. Use letter only in the blank.
A. 32 B. 50% C. 20 D. 30 E. 16% F. 10 G. 60% H. 50
4. How many defibrillators have a price of at least $180?__ D. _____
5. What percentage of the defibrillators has a price of at least $180? ___%___
6. What percentage of the defibrillators has a price of less than $140? ___ E. __
7. How many defibrillators cost at least $140 but no more than $210? __ A. ____
8. Temperature is an example ofa quantitative variable
A. a qualitative variable
B. a quantitative variable
C. either a quantitative or qualitative variable
D. neither a quantitative nor qualitative variable
Use the following situation for Questions 9 and 10.
The following frequency distribution shows the frequency of outbreaks of the11 virus (statistics flu) for the following households in a small rural community.
Households 1134 406 168 41 25 12 : 1786
Outbreaks 0 1 2 3 4 5
9.
Use the frequency distribution to construct a probability distribution by filling in
the blanks below.
x 0 1 2 3 4 5
P(x) P(0) = P(1) = P(2) = P(3) = P(4) = P(5) =
10. Compute the mean and the standard deviation and select from the following the appropriate interpretation of the results (select best response)
A. A household on the average has 0.9 outbreaks with a standard deviation of.6 outbreaks
B. A household on the average has 0.6 outbreaks with a standard deviation of12 outbreaks
C. A household on the average has 0.9 outbreaks with a standard deviation of.9 outbreaks
D. A household on the average has 0.6 outbreaks with a standard deviation of.9 outbreaks
Use the following situ.
The document contains a practice exam for a business research methods course. It includes 30 multiple choice questions covering topics like research methods, statistical concepts, probability distributions, sampling, and ethics. The questions assess understanding of key business research concepts and techniques.
The document contains a practice exam for a business research methods course. It includes 30 multiple choice questions covering topics like research methods, statistical concepts, probability distributions, sampling, and ethics. The questions assess understanding of key business research concepts and techniques.
This document contains information about downloading a tutorial on diversity between Hispanics in America from a provided link. It also contains sample data and questions about statistics, probabilities, hypothesis testing, and regression analysis related to business scenarios around customers, fire department response times, battery life, radio listenership, mail delivery, employee benefits, and airline staffing.
The document provides information about a final exam for RES 341, including multiple choice questions and answers regarding statistics concepts such as confidence intervals, control charts, sampling, and hypothesis testing. It also provides textbook price and sales data to solve problems related to measures of center, variation, and distributions.
The document provides information about a final exam for RES 341, including multiple choice questions and answers regarding statistics concepts such as confidence intervals, control charts, sampling, and hypothesis testing. It also provides textbook price and sales data to solve problems related to estimating means, variances, and probabilities.
1) Those methods involving the collection, presentation, and chara.docxdorishigh
The document contains a series of multiple choice questions related to descriptive statistics and probability concepts. Specifically, it covers topics such as descriptive statistics, probability distributions, sampling, bias, and inference. The questions are designed to test understanding of key terminology, properties of distributions, and how to apply statistical techniques to answer questions about data and populations.
This document provides an overview of key concepts in statistics and probability covered in Chapter 4, including:
- Definitions of mean, median, and mode and how to calculate each from a data set.
- How to calculate probability, including the probability of independent and dependent events.
- Examples of how to determine the probability of outcomes based on given percentages.
- An overview of concepts like sampling, graphs, counting principles, and relationships between data.
This document provides an overview of key concepts in statistics and probability covered in Chapter 4, including:
- Methods for obtaining unbiased samples and representing data in line, bar, and circle graphs.
- Calculating the mean, median, and mode of data sets and understanding their relationships.
- Applying counting principles and calculating probabilities, including for independent vs. dependent events.
- Worked examples are provided to demonstrate computing probabilities and interpreting data distributions and relationships.
This document provides an overview of key concepts in statistics and probability covered in Chapter 4, including:
- Types of graphs like line graphs, bar graphs, and circle graphs for representing data
- Measures of central tendency like the mean, median, and mode
- Calculating probabilities using formulas and the counting principle
- Examples demonstrate computing probabilities for events and selecting random samples from populations.
This document provides an overview of key concepts in statistics and probability covered in Chapter 4, including:
- Methods for obtaining unbiased samples and interpreting line, bar, and circle graphs
- Calculating the mean, median, and mode of data sets and understanding their relationships
- Applying concepts like the counting principle and probability to solve problems
- Worked examples are provided to demonstrate computing probabilities and applying statistical concepts to real-world scenarios.
Question 1. [12 marks]Market research has indicated that custo.docxIRESH3
Question 1. [12 marks]
Market research has indicated that customers are likely to bypass Roma tomatoes that weigh less than 70 grams. A produce company produces Roma tomatoes that average 74.0 grams with a standard deviation of 3.2 grams.
(a) [2 marks] Assuming that the normal distribution is a reasonable model for the
weights of these tomatoes, what proportion of Roma tomatoes are currently undersize (less than 70g)?
(b) [2 marks] How much must a Roma tomato weigh to be among the heaviest 10%?
(c ) [2 marks] The aim of the current research is to reduce the proportion of
undersized tomatoes to no more than 2%. One way of reducing this proportion is to reduce the standard deviation. If the average size of the tomatoes remains 74.0 grams, what must the target standard deviation be to achieve the 2% goal?
(d) [3 marks] The company claims that the goal of 2% undersized tomatoes is
reached.To test this, a random sample of 25 tomatoes is taken. What is the
distribution of undersized tomatoes in this sample if the company's claim is true?
Explain your reasoning.
Question 2:
In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the shares of dollar billing volume coming from various media categories such as network television, spot television, newspaper, radio, and so forth.
Suppose that a random sample of 400 U.S. advertising agencies gives an average percentage share of billing volume from network television equal to 7.46 percent with a standard deviation of 1.42 percent. Further, suppose that a random sample of 400 U.S. advertising agencies gives an average percentage share of billing volume from spot television commercials equal to 12.44 percent with a standard deviation of 1.55 percent.
Using the sample information, does it appear that the mean percentage share of billing volume from spot television commercials for the U.S. advertising agencies is greater than the mean percentage share of billing volume from network television? Explain.
Module #3: Sampling Distributions, Estimates, and Hypothesis Testing
Question 3:
[3] Identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.
a) The instructor of this course observed at a Walnut Creek Police sobriety checkpoint at which every fifth driver was stopped and interviewed. Some drivers were arrested.
b) The instructor of this course observed professional wine tasters working at a winery in Napa Valley, CA. Assume that a taste test involved three different wines randomly selected from each of five different wineries.
c) The U.S. Department of Corrections collects data about returning prisoners by randomly selecting five federal prisons and surveying all of the prisoners in each of the prisons.
d) In a Gallup poll, 1003 adults were called after their telephone numbers were randomly generated by a computer, and 20% of t ...
STAT 200 Introduction to Statistics Final Examination, Spri.docxrafaelaj1
STAT 200: Introduction to Statistics
Final Examination, Spring 2019 OL3
Page 1 of 8
STAT 200
OL3 Sections
Final Exam
Spring 2019
The final exam will be posted at 12:01 am on April 19, 2019, and
it is due at 11:59 pm on April 21, 2019 Eastern Time.
This is an open-book exam. You may refer to your text and other course materials
for the current course as you work on the exam, and you may use a calculator,
applets, or Excel. You must complete the exam individually. Neither collaboration
nor consultation with others is allowed. It is a violation of the UMUC Academic
Dishonesty and Plagiarism policy to use unauthorized materials or work from
others.
Answer all 20 questions. Make sure your answers are as complete as possible,
particularly when it asks for you to show your work. Answers that come straight
from calculators, programs or software packages without any explanation will not
be accepted. If you need to use technology (for example, Excel, online or hand-
held calculators, statistical packages) to aid in your calculation, you must cite the
sources and explain how you get the results. For example, state the Excel function
along with the required parameters when using Excel; describe the detailed steps
when using a hand-held calculator; or provide the URL and detailed steps when
using an online calculator, and so on.
Record your answers and work on the separate answer sheet provided.
This exam has 20 problems; 5% for each problems.
You must include the Honor Pledge on the title page of your submitted final exam.
Exams submitted without the Honor Pledge will not be accepted.
STAT 200: Introduction to Statistics
Final Examination, Spring 2019 OL3
Page 2 of 8
1. You wish to estimate the mean cholesterol levels of patients two days after they had a heart attack. To
estimate the mean, you collect data from 28 heart patients. Justify for full credit.
(a) Which of the followings is the sample?
(i) Mean cholesterol levels of 28 patients recovering from a heart attack suffered two
days ago
(ii) Cholesterol level of the person recovering from heart attack suffered two days ago
(iii) Set of all patients recovering from a heart attack suffered two days ago
(iv) Set of 28 patients recovering from a heart attack suffered two days ago
(b) Which of the followings is the variable?
(i) Mean cholesterol levels of 28 patients recovering from a heart attack suffered two
days ago
(ii) Cholesterol level of the person recovering from heart attack suffered two days ago
(iii) Set of all patients recovering from a heart attack suffered two days ago
(iv) Set of 28 patients recovering from a heart attack suffered two days ago
2. In order to collect data on the number of courses that your classmates take in this semester, you plan
on asking them: “How many UMUC courses are you taking in this semester? “Justify for full credit.
(a) Which type of d.
This document provides a practice final exam for a Statistics 311 course. It includes instructions for students taking the exam, an honor pledge, and 36 multiple choice and written response questions covering a range of statistical topics. The exam is intended to help students prepare for the format and level of questions that may appear on the actual final exam. It notes that the practice exam does not contain the exact questions or topics that will be on the real exam.
1 3 my statlab module one problem set complete solutions correct answers keySong Love
1-3 MyStatLab Module One Problem Set complete solutions correct answers key
https://www.coursemerit.com/solution-details/24589/1-3-MyStatLab-Module-One-Problem-Set-complete-solutions-correct-answers-key
The director of admissions at Kinzua University in Nova Scotia est.docxmehek4
The document provides information about admissions data from Kinzua University. It gives the estimated distribution of admissions based on past experience, with probabilities and expected admission numbers. It then asks to compute the expected number of admissions, variance, and standard deviation. The next section provides information about a sample of tax returns regarding charitable contributions and the probability of audited returns having certain deductions.
This document contains several statistics exercises involving calculating point estimates, confidence intervals, and other inferential statistics concepts. The exercises provide sample data and ask the reader to calculate things like means, variances, standard errors, and confidence intervals. They cover topics like using sample data to estimate properties of populations, constructing confidence intervals for means and proportions, and applying these statistical techniques to real-world scenarios.
A. 0.9641B. 3.59C. 96.41D. 0.0359Question 2 of 40.docxkeiran409es
A. 0.9641
B. 3.59
C. 96.41
D. 0.0359
Question 2 of 40
0.0/ 2.5 Points
A study of a brand of “in the shell peanuts” gives the following results:
A significant event at the 0.01 level is a fan getting a bag with how many peanuts?
A. 30 peanuts
B. 25 or 30 peanuts
C. 25 or 55 peanuts
D. 25 peanuts
Question 3 of 40
0.0/ 2.5 Points
In the past, the mean running time for a certain type of flashlight battery has been 8.0 hours. The manufacturer has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has increased as a result. The hypotheses are:
H
0
: µ
= 8.0 hours
H
a
: µ
> 8.0 hours
Explain the meaning of a Type II error.
A. Concluding that µ > 8.0 hours when in fact µ > 8.0 hours
B. Failing to reject the hypothesis that µ = 8.0 hours when in fact µ >
8.0 hours
C. Concluding that µ > 8.0 hours
D. Failing to reject the hypothesis that µ = 8.0 hours when in fact µ = 8.0 hours
Question 4 of 40
0.0/ 2.5 Points
If a fan purchased a bag with 30 peanuts, what is the lowest level at which this would be a significant event?
A. 0.05
B. 0.025
C. 0.01
D. It is not significant at any of the levels given
Question 5 of 40
0.0/ 2.5 Points
A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis?
A. Greater than or equal to 0.10
B. Less than or equal to 0.05
C. Less than or equal to 0.10
D. Greater than or equal to 0.05
Question 6 of 40
0.0/ 2.5 Points
In 1990, the average duration of long-distance telephone calls originating in one town was 9.4 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 9.4 minutes. The mean duration for a random sample of 50 calls originating in the town was 8.6 minutes. Does the data provide sufficient evidence to conclude that the mean call duration, µ, is different from the 1990 mean of 9.4 minutes? Perform the appropriate hypothesis test using a significance level of 0.01. Assume that
s
= 4.8 minutes.
A. With a z of -1.2 there is sufficient evidence to conclude that the mean
value has changed from the 1990 mean of 9.4 minutes.
B. With a P-value of 0.2302 there is not sufficient evidence to conclude
that the mean value is less than the 1990 mean of 9.4 minutes.
C. With a P-value of 0.2302 there is sufficient evidence to conclude that
the mean value is less than the 1990 mean of 9.4 minutes.
D. With a z of –1.2 there is not sufficient evidence to conclude that the
mean value has changed from the 1990 mean of 9.4 minutes.
Question 7 of 40
0.0/ 2.5 Points
A two-tailed test is conducted at the 5% significance level. Which of the z-scores below is the smallest one that leads to rejection of the null hypothesis?
A. 1.12
B. 1.48
C. 1.84
D. 2.15
Question 8 of 40
0.0/ 2.5 Points
without computing a P-value, determine whether the alter.
Second Course in Statistics Regression Analysis 7th Edition Mendenhall Soluti...ryfomoluq
Full download : https://alibabadownload.com/product/second-course-in-statistics-regression-analysis-7th-edition-mendenhall-solutions-manual/
Second Course in Statistics Regression Analysis 7th Edition Mendenhall Solutions Manual
As mentioned earlier, the mid-term will have conceptual and quanti.docxfredharris32
As mentioned earlier, the mid-term will have conceptual and quantitative multiple-choice questions. You need to read all 4 chapters and you need to be able to solve problems in all 4 chapters in order to do well in this test.
The following are for review and learning purposes only. I am not indicating that identical or similar problems will be in the test. As I have indicated in the class syllabus, all the exams in this course will have multiple-choice questions and problems.
Suggestion: treat this review set as you would an actual test. Sit down with your one page of notes and your calculator, and give it a try. That way you will know what areas you still need to study.
ADMN 210
Answers to Review for Midterm #1
1) Classify each of the following as nominal, ordinal, interval, or ratio data.
a. The time required to produce each tire on an assembly line – ratio since it is numeric with a valid 0 point meaning “lack of”
b. The number of quarts of milk a family drinks in a month - ratio since it is numeric with a valid 0 point meaning “lack of”
c. The ranking of four machines in your plant after they have been designated as excellent, good, satisfactory, and poor – ordinal since it is ranking data only
d. The telephone area code of clients in the United States – nominal since it is a label
e. The age of each of your employees - ratio since it is numeric with a valid 0 point meaning “lack of”
f. The dollar sales at the local pizza house each month - ratio since it is numeric with a valid 0 point meaning “lack of”
g. An employee’s identification number – nominal since it is a label
h. The response time of an emergency unit - ratio since it is numeric with a valid 0 point meaning “lack of”
2) True or False: The highest level of data measurement is the ratio-level measurement.
True (you can do the most powerful analysis with this kind of data)
3) True or False: Interval- and ratio-level data are also referred to as categorical data.
False (Interval and ratio level data are numeric and therefore quantitative, NOT qualitative….Nominal is qualitative)
4) A small portion or a subset of the population on which data is collected for conducting statistical analysis is called __________.
A sample! A population is the total group, a census IS the population, and a data set can be either a sample or a population.
5) One of the advantages for taking a sample instead of conducting a census is this:
a sample is more accurate than census
a sample is difficult to take
a sample cannot be trusted
a sample can save money when data collection process is destructive
6) Selection of the winning numbers is a lottery is an example of __________.
convenience sampling
random sampling
nonrandom sampling
regulatory sampling
7) A type of random sampling in which the population is divided into non-overlapping subpopulations is called __________.
stratified random sampling
cluster sampling
systematic random sampling
regulatory sampling
8) A ...
This document provides 10 multiple choice questions that are checkpoints for weeks 1-4 of a graduate level statistics course (GM533). The questions cover a range of statistical concepts including measures of central tendency, probability, confidence intervals, hypothesis testing, and more. Sample sizes and other relevant information are provided for each question.
This document provides 10 multiple choice questions that are checkpoints for a student completing weeks 1-4 of a graduate level statistics course (GM533). The questions cover a range of statistical concepts including measures of central tendency, probability, confidence intervals, hypothesis testing, and more. Correct answers are provided for each question.
This document provides 10 multiple choice questions that are checkpoints for a student completing weeks 1-4 of a graduate level statistics course (GM533). The questions cover a range of statistical concepts including measures of central tendency, probability, confidence intervals, hypothesis testing, and more. Correct answers are provided for each question.
This document provides a summary of 10 multiple choice questions from weekly checkpoints for the course GM533. The questions cover topics in statistics including calculating relative frequencies, means, medians, standard deviations, probabilities, z-scores, and interpreting normal distributions. Correct answer options are provided for each question. The document appears to be a study guide or self-assessment for a student in the GM533 course to check their understanding of key statistical concepts covered in the first 4 weeks.
Exam Questions1. (Mandatory) Assess the strengths and weaknesse.docxtheodorelove43763
Exam Questions:
1. (Mandatory) Assess the strengths and weaknesses of Divine Command Theory. Give a strong, well-supported argument in favor of (or opposed to) DCT for ethical decision-making.
1. (Mandatory) Explain the ethical theory of Thomas Hobbes, David Hume,
or
Immanuel Kant, primarily concerning morality and justice. Include contextual/background factors that shaped the theory. Also, tell why you agree or disagree with it, providing a present-day illustration to support your position.
Choose
either
3 or 4:
1. Analyze the strengths and weaknesses of Utilitarianism and Ethical Egoism. Provide an argument in favor of (or opposed to) either Utilitarianism or Ethical Egoism, using an illustration from history or personal experience.
2. Compare and contrast rationalism and empiricism, including one or more key figures representing each perspective. Focus primarily on the impact of these knowledge theories on ethical thinking (Christian or otherwise), both in the liberal arts and Western culture.
Each question must be answered with 250-300 words. Make sure to write as clearly and specifically as possible. Use your own words and include in-text citation, and provide references
.
Evolving Leadership roles in HIM1. Increased adoption of hea.docxtheodorelove43763
Evolving Leadership roles in HIM
1. Increased adoption of health information technology is opening innovative leadership pathways for HIM professionals. Four areas of opportunity based on the HIT roadmap created by the Office of the National Coordinator for Health Information Technology include privacy and security, adoption of information technology, interoperability, and collaborative governance. Choose one of these to explore, listing the challenges and opportunities for HIM professionals.
2. Take one of the challenges you presented and address it by using the 3 I’s Leadership Model for e-HIM that AHIMA adapted.
3. Postulate how earning an AHIMA credential can prepare you for leadership opportunity.
AHIMA. 2016a. e-HIM Overview and Instructions. AHIMA Leadership Model. http://library.ahima. org/xpedio/groups/public/documents/ahima/bok1_042565.pdf
AHIMA. 2016b. Why Get Certified. Certification. http://www.ahima.org/certification/whycertify Zeng, X., Reynolds, R., and Sharp, M. 2009. Redefining the Roles of Health Information Management Professionals in Health Information Technology. Perspectives in Health Information Management. (6). http://perspectives.ahima.org/redefining-the-roles-of-health-information-managementprofessionals-in-health-information-technology/#.VfWxFNJVhBc
.
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The document contains a series of multiple choice questions related to descriptive statistics and probability concepts. Specifically, it covers topics such as descriptive statistics, probability distributions, sampling, bias, and inference. The questions are designed to test understanding of key terminology, properties of distributions, and how to apply statistical techniques to answer questions about data and populations.
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- How to calculate probability, including the probability of independent and dependent events.
- Examples of how to determine the probability of outcomes based on given percentages.
- An overview of concepts like sampling, graphs, counting principles, and relationships between data.
This document provides an overview of key concepts in statistics and probability covered in Chapter 4, including:
- Methods for obtaining unbiased samples and representing data in line, bar, and circle graphs.
- Calculating the mean, median, and mode of data sets and understanding their relationships.
- Applying counting principles and calculating probabilities, including for independent vs. dependent events.
- Worked examples are provided to demonstrate computing probabilities and interpreting data distributions and relationships.
This document provides an overview of key concepts in statistics and probability covered in Chapter 4, including:
- Types of graphs like line graphs, bar graphs, and circle graphs for representing data
- Measures of central tendency like the mean, median, and mode
- Calculating probabilities using formulas and the counting principle
- Examples demonstrate computing probabilities for events and selecting random samples from populations.
This document provides an overview of key concepts in statistics and probability covered in Chapter 4, including:
- Methods for obtaining unbiased samples and interpreting line, bar, and circle graphs
- Calculating the mean, median, and mode of data sets and understanding their relationships
- Applying concepts like the counting principle and probability to solve problems
- Worked examples are provided to demonstrate computing probabilities and applying statistical concepts to real-world scenarios.
Question 1. [12 marks]Market research has indicated that custo.docxIRESH3
Question 1. [12 marks]
Market research has indicated that customers are likely to bypass Roma tomatoes that weigh less than 70 grams. A produce company produces Roma tomatoes that average 74.0 grams with a standard deviation of 3.2 grams.
(a) [2 marks] Assuming that the normal distribution is a reasonable model for the
weights of these tomatoes, what proportion of Roma tomatoes are currently undersize (less than 70g)?
(b) [2 marks] How much must a Roma tomato weigh to be among the heaviest 10%?
(c ) [2 marks] The aim of the current research is to reduce the proportion of
undersized tomatoes to no more than 2%. One way of reducing this proportion is to reduce the standard deviation. If the average size of the tomatoes remains 74.0 grams, what must the target standard deviation be to achieve the 2% goal?
(d) [3 marks] The company claims that the goal of 2% undersized tomatoes is
reached.To test this, a random sample of 25 tomatoes is taken. What is the
distribution of undersized tomatoes in this sample if the company's claim is true?
Explain your reasoning.
Question 2:
In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the shares of dollar billing volume coming from various media categories such as network television, spot television, newspaper, radio, and so forth.
Suppose that a random sample of 400 U.S. advertising agencies gives an average percentage share of billing volume from network television equal to 7.46 percent with a standard deviation of 1.42 percent. Further, suppose that a random sample of 400 U.S. advertising agencies gives an average percentage share of billing volume from spot television commercials equal to 12.44 percent with a standard deviation of 1.55 percent.
Using the sample information, does it appear that the mean percentage share of billing volume from spot television commercials for the U.S. advertising agencies is greater than the mean percentage share of billing volume from network television? Explain.
Module #3: Sampling Distributions, Estimates, and Hypothesis Testing
Question 3:
[3] Identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.
a) The instructor of this course observed at a Walnut Creek Police sobriety checkpoint at which every fifth driver was stopped and interviewed. Some drivers were arrested.
b) The instructor of this course observed professional wine tasters working at a winery in Napa Valley, CA. Assume that a taste test involved three different wines randomly selected from each of five different wineries.
c) The U.S. Department of Corrections collects data about returning prisoners by randomly selecting five federal prisons and surveying all of the prisoners in each of the prisons.
d) In a Gallup poll, 1003 adults were called after their telephone numbers were randomly generated by a computer, and 20% of t ...
STAT 200 Introduction to Statistics Final Examination, Spri.docxrafaelaj1
STAT 200: Introduction to Statistics
Final Examination, Spring 2019 OL3
Page 1 of 8
STAT 200
OL3 Sections
Final Exam
Spring 2019
The final exam will be posted at 12:01 am on April 19, 2019, and
it is due at 11:59 pm on April 21, 2019 Eastern Time.
This is an open-book exam. You may refer to your text and other course materials
for the current course as you work on the exam, and you may use a calculator,
applets, or Excel. You must complete the exam individually. Neither collaboration
nor consultation with others is allowed. It is a violation of the UMUC Academic
Dishonesty and Plagiarism policy to use unauthorized materials or work from
others.
Answer all 20 questions. Make sure your answers are as complete as possible,
particularly when it asks for you to show your work. Answers that come straight
from calculators, programs or software packages without any explanation will not
be accepted. If you need to use technology (for example, Excel, online or hand-
held calculators, statistical packages) to aid in your calculation, you must cite the
sources and explain how you get the results. For example, state the Excel function
along with the required parameters when using Excel; describe the detailed steps
when using a hand-held calculator; or provide the URL and detailed steps when
using an online calculator, and so on.
Record your answers and work on the separate answer sheet provided.
This exam has 20 problems; 5% for each problems.
You must include the Honor Pledge on the title page of your submitted final exam.
Exams submitted without the Honor Pledge will not be accepted.
STAT 200: Introduction to Statistics
Final Examination, Spring 2019 OL3
Page 2 of 8
1. You wish to estimate the mean cholesterol levels of patients two days after they had a heart attack. To
estimate the mean, you collect data from 28 heart patients. Justify for full credit.
(a) Which of the followings is the sample?
(i) Mean cholesterol levels of 28 patients recovering from a heart attack suffered two
days ago
(ii) Cholesterol level of the person recovering from heart attack suffered two days ago
(iii) Set of all patients recovering from a heart attack suffered two days ago
(iv) Set of 28 patients recovering from a heart attack suffered two days ago
(b) Which of the followings is the variable?
(i) Mean cholesterol levels of 28 patients recovering from a heart attack suffered two
days ago
(ii) Cholesterol level of the person recovering from heart attack suffered two days ago
(iii) Set of all patients recovering from a heart attack suffered two days ago
(iv) Set of 28 patients recovering from a heart attack suffered two days ago
2. In order to collect data on the number of courses that your classmates take in this semester, you plan
on asking them: “How many UMUC courses are you taking in this semester? “Justify for full credit.
(a) Which type of d.
This document provides a practice final exam for a Statistics 311 course. It includes instructions for students taking the exam, an honor pledge, and 36 multiple choice and written response questions covering a range of statistical topics. The exam is intended to help students prepare for the format and level of questions that may appear on the actual final exam. It notes that the practice exam does not contain the exact questions or topics that will be on the real exam.
1 3 my statlab module one problem set complete solutions correct answers keySong Love
1-3 MyStatLab Module One Problem Set complete solutions correct answers key
https://www.coursemerit.com/solution-details/24589/1-3-MyStatLab-Module-One-Problem-Set-complete-solutions-correct-answers-key
The director of admissions at Kinzua University in Nova Scotia est.docxmehek4
The document provides information about admissions data from Kinzua University. It gives the estimated distribution of admissions based on past experience, with probabilities and expected admission numbers. It then asks to compute the expected number of admissions, variance, and standard deviation. The next section provides information about a sample of tax returns regarding charitable contributions and the probability of audited returns having certain deductions.
This document contains several statistics exercises involving calculating point estimates, confidence intervals, and other inferential statistics concepts. The exercises provide sample data and ask the reader to calculate things like means, variances, standard errors, and confidence intervals. They cover topics like using sample data to estimate properties of populations, constructing confidence intervals for means and proportions, and applying these statistical techniques to real-world scenarios.
A. 0.9641B. 3.59C. 96.41D. 0.0359Question 2 of 40.docxkeiran409es
A. 0.9641
B. 3.59
C. 96.41
D. 0.0359
Question 2 of 40
0.0/ 2.5 Points
A study of a brand of “in the shell peanuts” gives the following results:
A significant event at the 0.01 level is a fan getting a bag with how many peanuts?
A. 30 peanuts
B. 25 or 30 peanuts
C. 25 or 55 peanuts
D. 25 peanuts
Question 3 of 40
0.0/ 2.5 Points
In the past, the mean running time for a certain type of flashlight battery has been 8.0 hours. The manufacturer has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has increased as a result. The hypotheses are:
H
0
: µ
= 8.0 hours
H
a
: µ
> 8.0 hours
Explain the meaning of a Type II error.
A. Concluding that µ > 8.0 hours when in fact µ > 8.0 hours
B. Failing to reject the hypothesis that µ = 8.0 hours when in fact µ >
8.0 hours
C. Concluding that µ > 8.0 hours
D. Failing to reject the hypothesis that µ = 8.0 hours when in fact µ = 8.0 hours
Question 4 of 40
0.0/ 2.5 Points
If a fan purchased a bag with 30 peanuts, what is the lowest level at which this would be a significant event?
A. 0.05
B. 0.025
C. 0.01
D. It is not significant at any of the levels given
Question 5 of 40
0.0/ 2.5 Points
A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis?
A. Greater than or equal to 0.10
B. Less than or equal to 0.05
C. Less than or equal to 0.10
D. Greater than or equal to 0.05
Question 6 of 40
0.0/ 2.5 Points
In 1990, the average duration of long-distance telephone calls originating in one town was 9.4 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 9.4 minutes. The mean duration for a random sample of 50 calls originating in the town was 8.6 minutes. Does the data provide sufficient evidence to conclude that the mean call duration, µ, is different from the 1990 mean of 9.4 minutes? Perform the appropriate hypothesis test using a significance level of 0.01. Assume that
s
= 4.8 minutes.
A. With a z of -1.2 there is sufficient evidence to conclude that the mean
value has changed from the 1990 mean of 9.4 minutes.
B. With a P-value of 0.2302 there is not sufficient evidence to conclude
that the mean value is less than the 1990 mean of 9.4 minutes.
C. With a P-value of 0.2302 there is sufficient evidence to conclude that
the mean value is less than the 1990 mean of 9.4 minutes.
D. With a z of –1.2 there is not sufficient evidence to conclude that the
mean value has changed from the 1990 mean of 9.4 minutes.
Question 7 of 40
0.0/ 2.5 Points
A two-tailed test is conducted at the 5% significance level. Which of the z-scores below is the smallest one that leads to rejection of the null hypothesis?
A. 1.12
B. 1.48
C. 1.84
D. 2.15
Question 8 of 40
0.0/ 2.5 Points
without computing a P-value, determine whether the alter.
Second Course in Statistics Regression Analysis 7th Edition Mendenhall Soluti...ryfomoluq
Full download : https://alibabadownload.com/product/second-course-in-statistics-regression-analysis-7th-edition-mendenhall-solutions-manual/
Second Course in Statistics Regression Analysis 7th Edition Mendenhall Solutions Manual
As mentioned earlier, the mid-term will have conceptual and quanti.docxfredharris32
As mentioned earlier, the mid-term will have conceptual and quantitative multiple-choice questions. You need to read all 4 chapters and you need to be able to solve problems in all 4 chapters in order to do well in this test.
The following are for review and learning purposes only. I am not indicating that identical or similar problems will be in the test. As I have indicated in the class syllabus, all the exams in this course will have multiple-choice questions and problems.
Suggestion: treat this review set as you would an actual test. Sit down with your one page of notes and your calculator, and give it a try. That way you will know what areas you still need to study.
ADMN 210
Answers to Review for Midterm #1
1) Classify each of the following as nominal, ordinal, interval, or ratio data.
a. The time required to produce each tire on an assembly line – ratio since it is numeric with a valid 0 point meaning “lack of”
b. The number of quarts of milk a family drinks in a month - ratio since it is numeric with a valid 0 point meaning “lack of”
c. The ranking of four machines in your plant after they have been designated as excellent, good, satisfactory, and poor – ordinal since it is ranking data only
d. The telephone area code of clients in the United States – nominal since it is a label
e. The age of each of your employees - ratio since it is numeric with a valid 0 point meaning “lack of”
f. The dollar sales at the local pizza house each month - ratio since it is numeric with a valid 0 point meaning “lack of”
g. An employee’s identification number – nominal since it is a label
h. The response time of an emergency unit - ratio since it is numeric with a valid 0 point meaning “lack of”
2) True or False: The highest level of data measurement is the ratio-level measurement.
True (you can do the most powerful analysis with this kind of data)
3) True or False: Interval- and ratio-level data are also referred to as categorical data.
False (Interval and ratio level data are numeric and therefore quantitative, NOT qualitative….Nominal is qualitative)
4) A small portion or a subset of the population on which data is collected for conducting statistical analysis is called __________.
A sample! A population is the total group, a census IS the population, and a data set can be either a sample or a population.
5) One of the advantages for taking a sample instead of conducting a census is this:
a sample is more accurate than census
a sample is difficult to take
a sample cannot be trusted
a sample can save money when data collection process is destructive
6) Selection of the winning numbers is a lottery is an example of __________.
convenience sampling
random sampling
nonrandom sampling
regulatory sampling
7) A type of random sampling in which the population is divided into non-overlapping subpopulations is called __________.
stratified random sampling
cluster sampling
systematic random sampling
regulatory sampling
8) A ...
This document provides 10 multiple choice questions that are checkpoints for weeks 1-4 of a graduate level statistics course (GM533). The questions cover a range of statistical concepts including measures of central tendency, probability, confidence intervals, hypothesis testing, and more. Sample sizes and other relevant information are provided for each question.
This document provides 10 multiple choice questions that are checkpoints for a student completing weeks 1-4 of a graduate level statistics course (GM533). The questions cover a range of statistical concepts including measures of central tendency, probability, confidence intervals, hypothesis testing, and more. Correct answers are provided for each question.
This document provides 10 multiple choice questions that are checkpoints for a student completing weeks 1-4 of a graduate level statistics course (GM533). The questions cover a range of statistical concepts including measures of central tendency, probability, confidence intervals, hypothesis testing, and more. Correct answers are provided for each question.
This document provides a summary of 10 multiple choice questions from weekly checkpoints for the course GM533. The questions cover topics in statistics including calculating relative frequencies, means, medians, standard deviations, probabilities, z-scores, and interpreting normal distributions. Correct answer options are provided for each question. The document appears to be a study guide or self-assessment for a student in the GM533 course to check their understanding of key statistical concepts covered in the first 4 weeks.
Similar to Data.txtPatient_number Disease_duration Improvement1 .docx (20)
Exam Questions1. (Mandatory) Assess the strengths and weaknesse.docxtheodorelove43763
Exam Questions:
1. (Mandatory) Assess the strengths and weaknesses of Divine Command Theory. Give a strong, well-supported argument in favor of (or opposed to) DCT for ethical decision-making.
1. (Mandatory) Explain the ethical theory of Thomas Hobbes, David Hume,
or
Immanuel Kant, primarily concerning morality and justice. Include contextual/background factors that shaped the theory. Also, tell why you agree or disagree with it, providing a present-day illustration to support your position.
Choose
either
3 or 4:
1. Analyze the strengths and weaknesses of Utilitarianism and Ethical Egoism. Provide an argument in favor of (or opposed to) either Utilitarianism or Ethical Egoism, using an illustration from history or personal experience.
2. Compare and contrast rationalism and empiricism, including one or more key figures representing each perspective. Focus primarily on the impact of these knowledge theories on ethical thinking (Christian or otherwise), both in the liberal arts and Western culture.
Each question must be answered with 250-300 words. Make sure to write as clearly and specifically as possible. Use your own words and include in-text citation, and provide references
.
Evolving Leadership roles in HIM1. Increased adoption of hea.docxtheodorelove43763
Evolving Leadership roles in HIM
1. Increased adoption of health information technology is opening innovative leadership pathways for HIM professionals. Four areas of opportunity based on the HIT roadmap created by the Office of the National Coordinator for Health Information Technology include privacy and security, adoption of information technology, interoperability, and collaborative governance. Choose one of these to explore, listing the challenges and opportunities for HIM professionals.
2. Take one of the challenges you presented and address it by using the 3 I’s Leadership Model for e-HIM that AHIMA adapted.
3. Postulate how earning an AHIMA credential can prepare you for leadership opportunity.
AHIMA. 2016a. e-HIM Overview and Instructions. AHIMA Leadership Model. http://library.ahima. org/xpedio/groups/public/documents/ahima/bok1_042565.pdf
AHIMA. 2016b. Why Get Certified. Certification. http://www.ahima.org/certification/whycertify Zeng, X., Reynolds, R., and Sharp, M. 2009. Redefining the Roles of Health Information Management Professionals in Health Information Technology. Perspectives in Health Information Management. (6). http://perspectives.ahima.org/redefining-the-roles-of-health-information-managementprofessionals-in-health-information-technology/#.VfWxFNJVhBc
.
Evolution of Terrorism300wrdDo you think terrorism has bee.docxtheodorelove43763
Evolution of Terrorism
300wrd
Do you think terrorism has been on the rise over the past few years?
Why do you think so?
Analyze and explain how contemporary terrorism is different from historical terrorism. Explain this with a focus on how terrorist groups have adapted their methods to take advantage of modern advancements, such as the Internet and modern modes of transportation.
Can you think of any other modern developments that have been utilized by terrorists?
Analyze and explain why people become and remain involved in a terrorist movement?
What do they hope to achieve?
Define terrorism and explain in your own words how it is practiced. Elucidate if you think terrorism is a criminal act or an act of war. Support your answers with appropriate research and reasoning.
Briefly describe a terrorist incident (Orlando Florida night club shooting jun12 2016) from the past five years (from anywhere in the world). Describe the act and explain how those responsible for this act were identified. Analyze if the goal of the terrorist or the terrorist group was achieved.
.
Evidence-based practice is an approach to health care where health c.docxtheodorelove43763
Evidence-based practice is an approach to health care where health care professionals use the best evidence possible or the most appropriate information available to make their clinical decisions. Research studies are gathered from the literature and assessed so that decisions about application can be done so with as much insight as possible. Not all research is able to be taken into the clinical practice that is why assessing the literature and determining if it is possible to carry out in a safe and effective manner is important. The steps that make up the evidence-based practice is first to ask a question which pertains to your clinical practice, then search for research and literature that will help solve your question. Third step is to evaluate the evidence and determine if it can be used safely and effectively in your clinical practice, then you must apply the information to your clinical experience and with your patient’s values. Finally, you must evaluate the outcome and determine if the desired effect is being reached. (LoBiondo-Wood, 2014)
The nursing process is drilled into our education as nurses and with good reason. The nursing process is used countless times throughout our practice. I was taught the acronym ADPIE which stands for assessment, diagnosis, planning, implementation, and evaluation. When assessing it is important to gather as much information on the patient whether it be subjective or objective findings. After we make a nursing diagnosis based on our assessment and then we plan on how to best care for our patient, and what our goals and their goals are for their care. Once the plan is made and the patient consents to the care plan then we can implement the plan. After we implement, we evaluate whether our goals and the patient’s goals are being reached. If not, we begin the nursing process all over again. (LoBiondo-Wood, 2014) In my own practice I use the nursing practice on every patient and even do it multiple times. When a patient enters the emergency room they are immediately being assessed and then once the physical and interview assessments are done the nurse creates a nursing diagnosis. The nurse creates a care plan that is based on evidence-based practice and goes over it with patient to gain consent.
The difference between these two processes is how they begin. The nursing process begins by gathering as much information as possible to then give a nursing diagnosis. While evidence-based practice begins by posing a question first and then gathering as much information as possible. They do have similarities especially when it comes to the end of the processes. Evaluating whether the care plan is working in the nursing process or whether the research and literature brought out a successful new take on the clinical practice. They both need to make the outcomes are as expected and if they are not it is back to the beginning of the process.
References
LoBiondo-Wood, G., & Harber, J. (2014). Nursing Research. St.
Evidence-Based EvaluationEvidence-based practice is importan.docxtheodorelove43763
Evidence-Based Evaluation
Evidence-based practice is important in the field of public health. Discuss the connection between evidence-based practice and program evaluation. Using the Capella Library, find two articles using
evidence-based
as key words. Use the two articles you found and discuss evidence-based practices in public health, explaining how the evidence was obtained. Discuss the population that benefited from the program or project mentioned in the articles.
.
Evidence Table
Study Citation
Design
Method
Sample
Data Collection
Data Analysis
Validity
Reliability
TECHEDGE CASE STUDY WRITE-UP - OUTLINE 1
DESIGN AND IMPLEMENTATION OF PERFORMANCE MANAGEMENT SYSTEMS,
KPIs AND RESPONSIBILITY CENTRES
CASE WRITE-UP – OUTLINE
LAURA MATTOS | SHRUTI KODANDARAMU | ASHA BORA
Ottawa University EMBA | Organizational Behavior Theory
TECHEDGE CASE STUDY WRITE-UP - OUTLINE 2
Our consulting team, RAL Consulting, was hired by TechEdge to evaluate its current
organization structure and behavior, identify areas of needed improvement, point out a list of
actionable items for the company to improve its performance and how to implement those. This
case outlines our team’s consulting process to produce a final case write-up.
CASE OUTLINE
1. Introduction (at least 1 but no more than 2 pages)
Overview and history of TechEdge (one or two paragraphs)
TechEdge offered technology consulting service to other business, in a B2B business model.
According to Prabhu & Hedgei, the company structure was divided into sales, consulting,
support and services, back office operations, finance and software. All these departments were
led by vice presidents who reported to the CEO. The VPs assisted the managers, who led their
teams independently in their departments.
TechEdge: Main Organizational Behavior issues (half - 1 page)
The case presented a summarized list of challenges faced by TechEdge. (For next assignment,
List 5 major reasons listed on the case on page 5). Our consulting team identified a few
behaviors that might be driving these 5 major issues. These are:
§ HR v. VP responsibilities
o HRs responsibilities limited to recruiting while VPs were managing, training and
evaluating performance of the employees.
o HR not assisting with people management issues.
§ Team leader v. VP responsibilities
o Team leaders were responsible for team performance, but each team member
reported to their respective VP.
TECHEDGE CASE STUDY WRITE-UP - OUTLINE 3
o Lack of unity and shared objectives
§ Group v. Team structure.
o Different departments working together as temporary teams without a clear
common objective. Each department was more focused on their own tasks.
§ General sense of unaccountability between teams:
o All teams felt they didn’t receive adequate support from the operations
department
o Dissatisfaction from Operations VP: Complaints about overload of work,
dependency on external factors, and not enough time to fulfil other teams’
expectations
o Finance team complained about not having enough funds due to bad performance
of the sales team
§ General feeling that the company was understaffed
§ HR team couldn’t hire the best employees offering low wages
Among all items listed, our consulting team considers the following the m.
Evidence SynthesisCritique the below evidence synthesis ex.docxtheodorelove43763
Evidence Synthesis
Critique the below evidence synthesis exemplar to address the following.
Patient falls with injury and fall prevention remain complex phenomena in the acute care setting as well as a major challenge for healthcare professionals (Gygax Spicer, 2017). Patient falls are considered one of the leading adverse events occurring in acute care settings such as hospitals and nursing homes, with the detrimental impact to the patient ranging from mild to severe bruising, fractures, trauma, and even death (de Medeiros Araújo et al., 2017). Falls are common phenomena in older adults, with roughly one out of three people age 65 years and older who suffers from at least one fall per year due to multiple factors including environmental, social, and physiological factors either alone or in conjunction (Gygax Spicer, 2017). The etiology is that patients are attempting to get out of bed without assistance from nursing staff. Several of the causative factors include illness, impulsiveness, urgency, medications, or being in an unfamiliar environment. Lastly, there has been an increase in the amount of turnover in staffing, thus reducing the amount of available nursing staff in the practice setting.
Does the author clearly identify the scope of the evidence synthesis? Explain your rationale.
Are strong paraphrased sentences included that are supported by contemporary sources of research evidence? Explain your rationale.
Are the facts related to the practice problem presented in an objective manner? Explain your rationale.
Does the author use sources to support ideas and claims, and not the other way around? Explain your rationale.
Based on your appraisal, is this exemplar a true synthesis of the evidence? Or is it a summary of the evidence? Explain your rationale.
Instructions:
Use an
APA 7 style and a minimum of 250 words
. Provide
support from a minimum of at least three (3) scholarly sources.
The scholarly source needs to be: 1) evidence-based, 2) scholarly in nature, 3) Sources should be no more than five years old (
published within the last 5 years), and 4) an in-text citation.
citations and references are included when information is summarized/synthesized and/or direct quotes are used, in which
APA style
standards apply.
• Textbooks are not considered scholarly sources.
• Wikipedia, Wikis, .com website or blogs should not be used.
.
Evidence Collection PolicyScenarioAfter the recent secur.docxtheodorelove43763
Evidence Collection Policy
Scenario
After the recent security breach, Always Fresh decided to form a computer security incident response team (CSIRT). As a security administrator, you have been assigned the responsibility of developing a CSIRT policy that addresses incident evidence collection and handling. The goal is to ensure all evidence collected during investigations is valid and admissible in court.
Consider the following questions for collecting and handling evidence:
1. What are the main concerns when collecting evidence?
2. What precautions are necessary to preserve evidence state?
3. How do you ensure evidence remains in its initial state?
4. What information and procedures are necessary to ensure evidence is admissible in court?
Tasks
Create a policy that ensures all evidence is collected and handled in a secure and efficient manner. Remember, you are writing a policy, not procedures. Focus on the high-level tasks, not the individual steps.
Address the following in your policy:
§ Description of information required for items of evidence
§ Documentation required in addition to item details (personnel, description of circumstances, and so on)
§ Description of measures required to preserve initial evidence integrity
§ Description of measures required to preserve ongoing evidence integrity
§ Controls necessary to maintain evidence integrity in storage
§ Documentation required to demonstrate evidence integrity
Required Resources
§ Internet access
§ Course textbook
Submission Requirements
§ Format: Microsoft Word (or compatible)
§ Font: Times New Roman, size 12, double-space
§ Citation Style: APA
§ Length: 2 to 4 pages
Self-Assessment Checklist
§ I created a policy that addressed all issues.
§ I followed the submission guidelines.
.
Everyone Why would companies have quality programs even though they.docxtheodorelove43763
Everyone: Why would companies have quality programs even though they cost money to implement?
Everyone: Define and explain three of the iPhone features in measurable terms.
Everyone: Referring to the leading causes of death, explain how you would develop an action plan.
#2. Explain how you would measure quality when buying a car wash.
.
Even though technology has shifted HRM to strategic partner, has thi.docxtheodorelove43763
Even though technology has shifted HRM to strategic partner, has this change resulted in HRM losing sight of its role towards employee resource and support? While companies are seeing the value in moving to a technological based business, how might HRM technology impact the "human" side of "human resource"?
.
Even though people are aware that earthquakes and volcanoes typi.docxtheodorelove43763
Even though people are aware that earthquakes and volcanoes typically occur in consistent regions, many make their homes in these locations. Unfortunately, history shows that it is only a matter of time before the next occurrence.
Perform some research on earthquake and volcano incidents that had a negative effect on people in a region. Select a disaster event where, despite the loss of life and property, the residents choose to rebuild rather than abandon the region.
For your initial post:
In your initial post, address the following:
Describe the event you selected, including:
the type and magnitude of the event
where it occurred
when it occurred
the various ways in which people were affected
whether that type of disaster affects the region repeatedly
State your opinion regarding the following questions:
Why do you think people continue to make the known dangerous area their home?
Should governments allow people to live in known risk areas?
Should insurance companies allow claims for damages incurred in known risk areas?
.
Evaluative Essay 2 Grading RubricCriteriaLevels of Achievement.docxtheodorelove43763
Evaluative Essay 2 Grading Rubric
Criteria Levels of Achievement
Content 70% Advanced 90-100% (A) Proficient 70-89% (B-C) Developing 1-69% (< D) Not present
Analysis
30 points 30 to27 points
o Thesis statement provides a clear, strong analysis, responding to the topic prompt.
o Paper demonstrates exceptional critical thinking skills.
o Logical presentation of information, body supports the thesis statement.
26 to 21 points
o Thesis statement is clear but could be stronger.
o Paper demonstrates good critical thinking skills.
o Logical presentation with good connections, but could be stronger.
OR
o Thesis statement does not provide a clear analysis.
o OR Thesis statement is evident but misplaced (located somewhere other than the end of the introduction).
o Evidence of critical thinking skills, but analysis could be stronger or more evident.
o Weak logic, or missing connections.
20 to 1 points
o Missing thesis statement.
o Focus of paper is more informative than analytical, with details focusing on the what rather than the why or how.
0 points
o Does not meet minimum requirements for the assignment.
**See instructor feedback for specifics.
Support
30 points 30 to 27 points
o Draws from assigned sources for supporting details.
o Provides specific, detailed support.
o Clear connections are made throughout the writing to show how supporting documents prove the main argument.
o No outside sources were consulted or used.
26 to 21 points
o Draws from assigned sources for supporting details, but support could be more specific.
o Connections are made between supporting details and main argument, but these could be more clear.
OR
o Supporting details are provided but connections are largely missing between the supporting details and the main argument.
20 to 1 points
o To include any of the following:
o Supporting details drawn primarily from textbook/lectures, instead of assigned sources.
o OR
o Supporting details merely informative and do not show clear connection to the thesis.
o OR
o Outside sources used in support.
0 points
o Does not meet minimum requirements for the assignment.
**See instructor feedback for specifics.
Biblical Evaluation
10 points 10 to 9 points
o Clear, Biblical evaluation provided, drawing from specific Scripture for support.
8 to 7 points
o Biblical evaluation is evident, and some use of Scripture is given for support.
OR
o Attempt at Biblical evaluation is provided, but support could be stronger.
6 to 1 points
o Christian worldview is evident in the writing, and some examples or details may be given, but a specific Biblical evaluation is not evident/clear.
o No Scriptural support
o OR
o Scripture included but connections to evaluation are not evident.
o 0 points
o Does not meet minimum requirements for the assignment.
**See instructor feedback for specifics.
Structure 30% Advanced 90-100% (A) Proficient 70-89% (B-C) Developing 1-69% (< D) Not present
.
Evaluation Title Research DesignFor this first assignment, .docxtheodorelove43763
Evaluation Title: Research Design
For this first assignment, you will analyze different types of research. To begin, please read and view the following materials:
Rice University. (2017).
2.2 Approaches to research (Links to an external site.)Links to an external site.
. in,
Psychology
. OpenStax. [Electronic version]
University of Minnesota Libraries Publishing. (2010).
2.2 Psychologists use descriptive, correlational, and experimental research designs to understand behavior (Links to an external site.)Links to an external site.
. In Introduction to Psychology. [Electronic version]
Select one research design from column A
and
column B.
Describe the design.
Discuss the strengths and weaknesses of the design.
Give an example of a study completed using this design.
This information is all available in the Unit 1 Learning Content. There are also resources available online to further your understanding.
Your assignment should be typed into a Word or other word processing document, formatted in APA style. The assignment must include:
Running head
A title page with Assignment name
Your name
Professor’s name
Course
.
Evaluation is the set of processes and methods that managers and sta.docxtheodorelove43763
Evaluation is the set of processes and methods that managers and stakeholders use to determine whether the program is successful. Success is determined by multiple parameters such as financial viability of the program as well as the administrative and clinical impact of the program on the community’s or organization’s mission. Today’s programs are also expected to proactively address healthcare disparities and inequities in all levels of communities and demonstrate measureable reductions in inequities in diverse patient/client populations.
For this milestone, you will create an evaluation plan that will include the financial aspects of your proposed program as well as your evaluation methods. In your submission, be sure to include the following:
Proposed Program :to establish a department in IGM to facilitate holistic care of pediatric patients. This holistic care will require patients to be monitored before, during, and after a clinical procedure. The program will be flexible to ensure that each patient receives customized care at a subsidized fee.
Financial Aspects
o What specific resources would you suggest for use in your program? For example, what staffing and equipment suggestions would you make?
Be sure to explain your rationale.
o What is the impact on the community’s or organization’s current budget? In other words, will the program fit into the existing budget, or willconcessions need to be made?
o What recommendations would you make for ensuring the program is financially sustainable? Are there measurable expense reductions for the community/organization that cover the costs of the program? Does the program create new sources of revenue for the community or organization to offset the costs of the program?
Evaluation
o What will you measure (such as benchmarks, patient outcomes, or other measurable data) in order to evaluate the effectiveness of the program implementation? Focus on both administrative and clinical measures. Include multiple levels of measurement, including the patients/clients served, populations of patients/clients served, and community environmental measures.
o What tools will you use to measure the effect of your program on reducing the incidence of healthcare disparities?
o How will these evaluation tools tell you whether the program is successful?
o To what extent will the program help ensure healthcare equity across diverse populations? Be sure to justify your reasoning.
Guidelines for Submission: Your paper for this milestone must be submitted as a 2- to 3-page Microsoft Word document with double spacing, 12-point Times New Roman font, one-inch margins, and proper APA formatting. Include at least three peer-reviewed, scholarly resources.
.
Evaluation Plan with Policy RecommendationAfter a program ha.docxtheodorelove43763
Evaluation Plan with Policy Recommendation
After a program has been created, it must be evaluated in order to determine its success. For this assignment, complete the following:
Incorporate the changes to address the feedback received.
Use the feedback from your instructor to address pertinent sections for errors or insufficiencies. Implementing this feedback will help you draft this assignment and your course project.
Discuss the program to be introduced to the selected population to address the specific public health problem or issue.
Assess population needs, assets, and capacities that affect communities' health through epidemiological records and literature reviews. Explain activities and resources to be introduced and used for this program to change behaviors and health outcomes and why they are selected.
Describe the projected goals for the program.
Based on past studies and available data, analyze the projected expected effects of the program.
Identify the engaged stakeholders.
Describe those involved, those affected, and the primary intended users.
Gather credible evidence to substantiate the need for the program.
Identify past programs similar to the proposed program and the outcomes for those past programs.
Explain past study results and epidemiological data for similar programs implemented.
Justify conclusions on the past programs and provide lessons learned for implementing this program.
Analyze how data will be collected from program participants and other relevant stakeholders to determine program effectiveness.
Identify what instruments will be used to collect data, such as surveys, focus group interviews, or key informant interviews.
Determine who will analyze the data and how the data will be analyzed.
Propose policy recommendations.
Evaluate policies for their impact on public health and health equity. Discuss multiple dimensions of the policy-making process, including the roles of ethics and evidence.
Discuss dissemination and communication suggestions for the evaluation results both in writing and through oral presentation.
Explain how the results will be shared with key stakeholders and the community.
Identify how the results will inform future programs and how they can improve health outcomes.
View the scoring guide to ensure you fulfill all grading criteria.
Additional Requirements
Length:
A minimum of 10–12 double-spaced pages, not including title and reference pages.
Font:
Arial, 12 point.
References:
Cite at least eight references from peer-reviewed journals.
Format:
Use current APA style and formatting.
Resources
Evaluation Plan with Policy Recommendation Scoring Guide
.
APA Style Paper Tutorial [DOCX]
.
APA Style Paper Template [DOCX]
.
Capella Writing Center
.
Public Health Intervention Plan.
Capella University Library.
State Policy Guide: Using Research in Public Health Policymaking
.
Public Health Masters Research Guide
.
Pub.
Evaluate the history of the Data Encryption Standard (DES) and then .docxtheodorelove43763
The document discusses the history of the Data Encryption Standard (DES) and how it transformed cryptography with the development of triple DES. Students are required to post a response to at least two other students by the end of the week using at least one scholarly resource, with all discussion postings in proper APA format.
Evaluate the Health History and Medical Information for Mrs. J.,.docxtheodorelove43763
Evaluate the Health History and Medical Information for Mrs. J., presented below.
Based on this information, formulate a conclusion based on your evaluation, and complete the Critical Thinking Essay assignment, as instructed below.
Health History and Medical Information
Health History
Mrs. J. is a 63-year-old married woman who has a history of hypertension, chronic heart failure, and chronic obstructive pulmonary disease (COPD). Despite requiring 2L of oxygen/nasal cannula at home during activity, she continues to smoke two packs of cigarettes a day and has done so for 40 years. Three days ago, she had sudden onset of flu-like symptoms including fever, productive cough, nausea, and malaise. Over the past 3 days, she has been unable to perform ADLs and has required assistance in walking short distances. She has not taken her antihypertensive medications or medications to control her heart failure for 3 days. Today, she has been admitted to the hospital ICU with acute decompensated heart failure and acute exacerbation of COPD.
Subjective Data
1. Is very anxious and asks whether she is going to die.
2. Denies pain but says she feels like she cannot get enough air.
3. Says her heart feels like it is "running away."
4. Reports that she is exhausted and cannot eat or drink by herself.
Objective Data
1. Height 175 cm; Weight 95.5kg.
2. Vital signs: T 37.6C, HR 118 and irregular, RR 34, BP 90/58.
3. Cardiovascular: Distant S1, S2, S3 present; PMI at sixth ICS and faint: all peripheral pulses are 1+; bilateral jugular vein distention; initial cardiac monitoring indicates a ventricular rate of 132 and atrial fibrillation.
4. Respiratory: Pulmonary crackles; decreased breath sounds right lower lobe; coughing frothy blood-tinged sputum; SpO2 82%.
5. Gastrointestinal: BS present: hepatomegaly 4cm below costal margin.
Intervention
The following medications administered through drug therapy control her symptoms:
1. IV furosemide (Lasix)
2. Enalapril (Vasotec)
3. Metoprolol (Lopressor)
4. IV morphine sulphate (Morphine)
5. Inhaled short-acting bronchodilator (ProAir HFA)
6. Inhaled corticosteroid (Flovent HFA)
7. Oxygen delivered at 2L/ NC
Critical Thinking Essay
In 750-1,000 words, critically evaluate Mrs. J.'s situation. Include the following:
1. Describe the clinical manifestations present in Mrs. J.
2. Discuss whether the nursing interventions at the time of her admissions were appropriate for Mrs. J. and explain the rationale for each of the medications listed.
3. Describe four cardiovascular conditions that may lead to heart failure and what can be done in the form of medical/nursing interventions to prevent the development of heart failure in each condition.
4. Taking into consideration the fact that most mature adults take at least six prescription medications, discuss four nursing interventions that can help prevent problems caused by multiple drug interactions in older patients. Provide a rationale for each of the inte.
Evaluate the environmental factors that contribute to corporate mana.docxtheodorelove43763
Evaluate the environmental factors that contribute to corporate management’s need to manage corporate earnings to align with market expectations, indicating the potential long-term risks to financial performance and sustainability. Why are these factors important in evaluating the financial performance of an organization?
Please provide one citation or reference for your initial posting that is not your textbook.
.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
Physiology and chemistry of skin and pigmentation, hairs, scalp, lips and nail, Cleansing cream, Lotions, Face powders, Face packs, Lipsticks, Bath products, soaps and baby product,
Preparation and standardization of the following : Tonic, Bleaches, Dentifrices and Mouth washes & Tooth Pastes, Cosmetics for Nails.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
Assessment and Planning in Educational technology.pptxKavitha Krishnan
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
2. 16 3 70
17 5 -30
18 3 20
19 1 40
20 6 0
Question.docx
· PLEASE ANSWER QUESTIONS FROM (a) to (f)
· PLEASE USE R STATISTICAL SOFTWARE TO ANSWER
ALL QUESTIONS. NO MANUAL CALCULATION
ANYWHERE.
· INCLUDE ALL THE NECESSARY CODES
· INCLUDE ONLY THE RELEVANT OUTPUTS FROM THE
SOFTWARE.
· ALL PLOTS SHOULD BE PROPERLY LABELLED. (X-
AXIS, Y-AXIS, TITLE, ETC.).
· PLEASE GIVE PROPER EXPLANATION FOR THE STEPS
AND CONCLUSIONS WHEREVER APPLICABLE
Anti-Anginal Response against Disease History
Treadmill stress tests were applied to patients with angina
pectoris before and 4 weeks after once-daily dosing with an
experimental anti-anginal medication. The main objective for
carrying out this study is to check if the improvement in
exercise duration is dependent on the patient’s disease history.
This data file represents the disease duration time (in years)
since initial diagnosis and percent-improvement in treadmill
walking times.
QUESTIONS :
(a) Identify the response and the explanatory variables with
proper reasoning
3. (b) Check graphically if the dependency between
“improvement” and “disease duration time” can be considered
to be linear.
(c) Now, use a formal test of hypothesis to check for the linear
relationship in part (b) and draw appropriate conclusion
(d) How does the disease duration effect the percentage
improvement in exercise duration
(e) What assumption did you make to carry out the testing in
part (c). Is there any other assumptions required to formulate a
linear model for “improvement” and “disease duration time”
(f) Check all the model assumptions made in part (d)
graphically and comment on the violation or non violation of
the model assumptions with proper reasoning
Patient_number Disease_duration Improvement
1 1 40
2 1 90
3 3 30
4 2 30
5 1 80
6 5 60
7 1 10
8 4 -10
9 2 50
10 6 40
11 1 60
12 4 0
13 2 50
14 2 100
15 3 20
16 3 70
17 5 -30
18 3 20
19 1 40
4. 20 6 0
Q1. Which of the following is true regarding the sampling
distribution of the mean for a large sample size?
a. It has the same shape, mean, and standard deviation as the
population.
b. It has a normal distribution with the same mean and
standard deviation as the population.
c. It has the same shape and mean as the population, but has a
smaller standard deviation.
d. It has a normal distribution with the same mean as the
population but with a smaller standard deviation.
Q2. According to a survey of American households, the
probability that the residents own 2 cars if annual household
income is over $25,000 is 80%. Of the households surveyed,
60% had incomes over $25,000 and 70% had 2 cars. The
probability that annual household income is over $25,000 if the
residents of a household do not own 2 cars is:
a. 0.12
b. 0.18
c. 0.40
d. 0.55
Q3. The collection and summarization of the socioeconomic and
physical characteristics of the employees of a particular firm is
an example of:
a. inferential statistics.
b. descriptive statistics.
c. a parameter.
d. a statistic.
5. Q4. The head librarian at the Library of Congress has asked her
assistant for an interval estimate of the mean number of books
checked out each day. The assistant provides the following
interval estimate: from 740 to 920 books per day.
If the head librarian knows that the population standard
deviation is 150 books checked out per day, and she asked her
assistant to use 25 days of data to construct the interval
estimate, what confidence level can she attach to the interval
estimate?
a. 99.7%
b. 99.0%
c. 98.0%
d. 95.4%
Q5. Referring to the histogram, how many graduating seniors
attended the luncheon?
a. 4
b. 152
c. 275
d. 388
Q6. The following are the durations in minutes of a sample of
long-distance phone calls made within the continental United
States reported by one long-distance carrier.
Time (in Minutes)
Relative Frequency
0 but less than 5
0.37
5 but less than 10
0.22
10 but less than 15
0.15
15 but less than 20
0.10
20 but less than 25
0.07
25 but less than 30
0.07
6. 30 or more
0.02
Referring to the table, if 10 calls lasted 30 minutes or more,
how many calls lasted less than 5 minutes?
a. 10
b. 185
c. 295
d. 500
Q7. The collection of all possible events is called:
a. a simple probability.
b. a sample space.
c. a joint probability.
d. the null set.
Q8. A lab orders 100 rats a week for each of the 52 weeks in the
year for experiments that the lab conducts. Prices for 100 rats
follow the following distribution:
Price:
$10.00
$12.50
$15.00
Probability:
0.35
0.40
0.25
How much should the lab budget for next year's rat orders be,
assuming this distribution does not change?
a. $520
b. $637
c. $650
d. $780
Q9. A professor of economics at a small Texas university
wanted to determine what year in school students were taking
his tough economics course. Shown below is a pie chart of the
results. What percentage of the class took the course prior to
reaching their senior year?
a. 14%
7. b. 44%
c. 54%
d. 86%
Q10. Since a _______ is not a randomly selected probability
sample, there is no way to know how well it represents the
overall population.
a. simple random sample
b. quota sample
c. stratified sample
d. cluster sample
Q11. A study is under way in Yosemite National Forest to
determine the adult height of American pine trees. Specifically,
the study is attempting to determine what factors aid a tree in
reaching heights greater than 60 feet tall. It is estimated that the
forest contains 25,000 adult American pines. The study involves
collecting heights from 250 randomly selected adult American
pine trees and analyzing the results. Identify the population
from which the study was sampled.
a. The 250 randomly selected adult American pine trees in the
forest.
b. The 25,000 adult American pine trees in the forest.
c. All the adult American pine trees taller than 60 feet in the
world.
d. All American pine trees, of any age, in the forest.
Q12. A population frame for a survey contains a listing of
72,345 names. Using a table of random numbers, how many
digits will the code numbers for each member of your
population contain?
a. 3
b. 4
c. 5
d. 6
Q13. The chancellor of a major university was concerned about
alcohol abuse on her campus and wanted to find out the portion
of students at her university who visited campus bars every
weekend. Her advisor took a random sample of 250 students.
8. The portion of students in the sample who visited campus bars
every weekend is an example of a __________.
a. categorical random variable
b. discrete random variable
c. parameter
d. statistic
Q14. The following are the durations in minutes of a sample of
long-distance phone calls made within the continental United
States reported by one long-distance carrier.
Time (in Minutes)
Relative Frequency
0 but less than 5
0.37
5 but less than 10
0.22
10 but less than 15
0.15
15 but less than 20
0.10
20 but less than 25
0.07
25 but less than 30
0.07
30 or more
0.02
Referring to Table 2-5, if 100 calls were randomly sampled,
how many calls lasted 15 minutes or longer?
a. 10
b. 14
c. 26
d. 74
Q15. If two events are mutually exclusive, what is the
probability that one or the other occurs?
a. 0
b. 0.50
c. 1.00
9. d. Cannot be determined from the information given.
Q16. According to a survey of American households, the
probability that the residents own 2 cars if annual household
income is over $25,000 is 80%. Of the households surveyed,
60% had incomes over $25,000 and 70% had 2 cars. The
probability that the residents of a household do not own 2 cars
and have an income over $25,000 a year is:
a. 0.12
b. 0.18
c. 0.22
d. 0.48
Q17. If two events are mutually exclusive and collectively
exhaustive, what is the probability that one or the other occurs?
a. 0.
b. 0.50.
c. 1.00.
d. Cannot be determined from the information given.
Q18. Why is the Central Limit Theorem so important to the
study of sampling distributions?
a. It allows us to disregard the size of the sample selected
when the population is not normal.
b. It allows us to disregard the shape of the sampling
distribution when the size of the population is large.
c. It allows us to disregard the size of the population we are
sampling from.
d. It allows us to disregard the shape of the population
whennis large.
Q19. A sample of 200 students at a Big-Ten university was
taken after the midterm to ask them whether they went bar
hopping the weekend before the midterm or spent the weekend
studying, and whether they did well or poorly on the midterm.
The following table contains the result.
Did Well on Midterm
Did Poorly on Midterm
Studying for Exam
10. 80
20
Went Bar Hopping
30
70
Referring to the table, of those who did well on the midterm in
the sample, _______ percent of them went bar hopping the
weekend before the midterm.
a. 15
b. 27.27
c. 30
d. 50
Q20. Tim was planning for a meeting with his boss to discuss a
raise in his annual salary. In preparation, he wanted to use the
Consumer Price Index to determine the percentage increase in
his salary in terms of real income over the last three years.
Which method of data collection was involved when he used the
Consumer Price Index?
a. Published sources
b. Experimentation
c. Surveying
d. Observation
Q21. A survey was conducted to determine how people rated the
quality of programming available on television. Respondents
were asked to rate the overall quality from 0 (no quality at all)
to 100 (extremely good quality). The stem-and-leaf display of
the data is shown below.
Stem
Leaves
3
24
4
3478999
5
112345
6
11. 12566
7
1
8
9
2
Referring to the table, what percentage of the respondents rated
overall television quality with a rating between 50 and 75?
a. 0.11
b. 0.40
c. 0.44
d. 0.56
Q22. The process of using sample statistics to draw conclusions
about true population parameters is called:
a. statistical inference.
b. the scientific method.
c. sampling.
d. descriptive statistics.
Q23. If two equally likely events A and B are mutually
exclusive and collectively exhaustive, what is the probability
that event A occurs?
a. 0
b. 0.50
c. 1.00
d. Cannot be determined from the information given.
Q24. Which of the following is most likely a parameter as
opposed to a statistic?
a. The average score of the first five students completing an
assignment.
b. The proportion of females registered to vote in a county.
c. The average height of people randomly selected from a
database.
d. The proportion of trucks stopped yesterday that were cited
for bad brakes.
Q25. Selection of raffle tickets from a large bowl is an example
12. of:
a. sampling with replacement.
b. sampling without replacement.
c. subjective probability.
d. None of the above.
Q26. The portfolio expected return of two investments
a. will be higher when the covariance is zero.
b. will be higher when the covariance is negative.
c. will be higher when the covariance is positive.
d. does not depend on the covariance.
Q27. Given the numbers: 1, 3, 5, 7, 8 what are the average and
the median?
a. Average = 4.8; Median = 5.0
b. Average = 5.0; Median = 5.0
c. Average = 4.8; Median = 4.8
d. Average = 5.0; Median = 4.8
Q28. The employees of a company were surveyed on questions
regarding their educational background and marital status. Of
the 600 employees, 400 had college degrees, 100 were single,
and 60 were single college graduates. The probability that an
employee of the company is single or has a college degree is:
a. 0.10
b. 0.25
c. 0.667
d. 0.733
Q29. A catalog company that receives the majority of its orders
by telephone conducted a study to determine how long
customers were willing to wait on hold before ordering a
product. The length of time was found to be a random variable
best approximated by an exponential distribution with a mean
equal to 3 minutes. What proportion of customers having to
hold more than 1.5 minutes will hang up before placing an
order?
a. 0.86466
b. 0.60653
c. 0.39347
13. d. 0.13534
Q30. The following are the durations in minutes of a sample of
long-distance phone calls made within the continental United
States reported by one long-distance carrier.
Time (in Minutes)
Relative Frequency
0 but less than 5
0.37
5 but less than 10
0.22
10 but less than 15
0.15
15 but less than 20
0.10
20 but less than 25
0.07
25 but less than 30
0.07
30 or more
0.02
Referring to the table, what is the width of each class?
a. 1 minute
b. 5 minutes
c. 2%
d. 100%
Q31. The probability that
· house sales will increase in the next 6 months is estimated to
be 0.25.
· the interest rates on housing loans will go up in the same
period is estimated to be 0.74
· house sales or interest rates will go up during the next 6
months is estimated to be 0.89
The probability that house sales will increase but interest rates
will not during the next 6 months is:
14. a. 0.065
b. 0.15
c. 0.51
d. 0.89
Q32. Which of the mean, median, mode, and geometric mean
are resistant measures of central tendency?
a. The mean and median.
b. The median and mode.
c. The mode and geometric mean.
d. The mean and mode.
Q33. The probability that
· house sales will increase in the next 6 months is estimated to
be 0.25
· the interest rates on housing loans will go up in the same
period is estimated to be 0.74
· house sales or interest rates will go up during the next 6
months is estimated to be 0.89
The probability that neither house sales nor interest rates will
increase during the next 6 months is:
a. 0.11
b. 0.195
c. 0.89
d. 0.90
Q34. Which of the following statistics is not a measure of
central tendency?
a. Mean.
b. Median.
c. Mode.
d. Q3.
Q35. The width of each bar in a histogram corresponds to the:
a. differences between the boundaries of the class.
b. number of observations in each class.
c. midpoint of each class.
d. percentage of observations in each class.
15. Q36. In left-skewed distributions, which of the following is the
correct statement?
a. The distance from Q1 to Q2 is smaller than the distance
from Q2 to Q3.
b. The distance from the smallest observation to Q1 is larger
than the distance from Q3 to the largest observation.
c. The distance from the smallest observation to Q2 is smaller
than the distance from Q2 to the largest observation.
d. The distance from Q1 to Q3 is twice the distance from Q1
to Q2.
Q37. The Central Limit Theorem is important in statistics
because:
a. for a largen, it says the population is approximately normal.
b. for any population, it says the sampling distribution of the
sample mean is approximately normal, regardless of the sample
size.
c. for a largen, it says the sampling distribution of the sample
mean is approximately normal, regardless of the shape of the
population.
d. for any sized sample, it says the sampling distribution of
the sample mean is approximately normal.
Q38. A sample of 200 students at a Big-Ten university was
taken after the midterm to ask them whether they went bar
hopping the weekend before the midterm or spent the weekend
studying, and whether they did well or poorly on the midterm.
The following table contains the result.
Did Well on the midterm
Did Poorly on Midterm
Studying for Exam
80
20
Went Bar Hopping
30
70
Referring to the table, _______ percent of the students in the
16. sample went bar hopping the weekend before the midterm and
did well on the midterm.
a. 15
b. 27.27
c. 30
d. 50
Q39. Which of the following statements about the median is not
true?
a. It is more affected by extreme values than the mean.
b. It is a measure of central tendency.
c. It is equal to Q2.
d. It is equal to the mode in bell-shaped "normal"
distributions.
Q40. A confidence interval was used to estimate the proportion
of statistics students that are females. A random sample of 72
statistics students generated the following 90% confidence
interval: (0.438, 0.642). Based on the interval above, is the
population proportion of females equal to 0.60?
a. No, and we are 90% sure of it.
b. No. The proportion is 54.17%.
c. Maybe. 0.60 is a believable value of the population
proportion based on the information above.
Q1. The sample correlation coefficient between X and Y is
0.375. It has been found out that the p-value is 0.256 when
testing H0: ρ = 0 against the two-sided alternative H1: ρ ≠ 0. To
test H0: ρ = 0 against the one-sided alternative H1: ρ > 0 at a
significance level of 0.193, the p-value is
a. 0.256/2
b. 0.256
c. 1 - 0.256
d. 1 - 0.256/2
Q2. A researcher randomly sampled 30 graduates of an MBA
program and recorded data concerning their starting salaries. Of
primary interest to the researcher was the effect of gender on
starting salaries. Analysis of the mean salaries of the females
17. and males in the sample is given below.
Size
Mean
Std Dev
Females
18
48,266.7
13,577.63
Males
12
55,000
11,741.29
Std Error = 4,764.82
Means Diff = -6,733.3
Z = -1.4528 2-tailed p value = 0.1463
T = -1.4221 2-tailed p value = 0.1574
Referring to the table, the researcher was attempting to show
statistically that the female MBA graduates have a significantly
lower mean starting salary than the male MBA graduates. What
assumptions were necessary to conduct this hypothesis test?
a. Both populations of salaries (male and female) must have
approximate normal distributions.
b. The population variances are approximately equal.
c. The samples were randomly and independently selected.
d. All of the above assumptions were necessary.
Q3. The Y-intercept (b0) represents the:
a. predicted value of Y when X = 0.
b. change in estimated average Y per unit change in X.
c. predicted value of Y.
d. variation around the sample regression line.
Q4. A local real estate appraiser analyzed the sales prices of
homes in 2 neighborhoods to the corresponding appraised values
18. of the homes. The goal of the analysis was to compare the
distribution of sale-to-appraised ratios from homes in the 2
neighborhoods. Random and independent samples were selected
from the 2 neighborhoods from last year's homes sales, 8 from
each of the 2 neighborhoods. Identify the nonparametric method
that would be used to analyze the data.
a. the Wilcoxon Signed-Ranks Test, using the test statistic Z
b. the Wilcoxon Signed-Ranks Test, using the test statistic W
c. the Wilcoxon Rank Sum Test, using the test statistic T1
d. the Wilcoxon Rank Sum Test, using the test statistic Z
Q5. A survey claims that 9 out of 10 doctors recommend aspirin
for their patients with headaches. To test this claim against the
alternative that the actual proportion of doctors who recommend
aspirin is less than 0.90, a random sample of 100 doctors results
in 83 who indicate that they recommend aspirin. The value of
the test statistic in this problem is approximately equal to:
a. -4.12
b. -2.33
c. -1.86
d. -0.07
Q6. A realtor wants to compare the average sales-to-appraisal
ratios of residential properties sold in four neighborhoods (W,
X, Y, and Z). Four properties are randomly selected from each
neighborhood and the ratios recorded for each, as shown below.
W: 1.2, 1.1, 0.9, 0.4
X: 2.5, 2.1, 1.9, 1.6
Y: 1.0, 1.5, 1.1, 1.3
Z: 0.8, 1.3, 1.1, 0.7
Interpret the results of the analysis summarized in the following
table:
Source
19. df
SS
MS
F
PR > F
Neighborhoods
2.97
0.990
8.31
0.0260
Error
12
Total
4.40
Referring to the table, the within group mean squares is
a. 0.119
b. 0.990
c. 1.109
d. 8.31
Q7. If a group of independent variables are not significant
individually but are significant as a group at a specified level of
significance, this is most likely due to:
a. autocorrelation.
b. the presence of dummy variables.
c. the absence of dummy variables.
d. collinearity.
Q8. In a multiple regression model, the adjusted r2
a. cannot be negative.
b. can sometimes be negative.
20. c. can sometimes be greater than +1.
d. has to fall between 0 and +1.
Q9. Why would you use the Tukey-Kramer procedure?
a. To test for normality.
b. To test for homogeneity of variance.
c. To test independence of errors.
d. To test for differences in pairwise means.
Q10. A campus researcher wanted to investigate the factors that
affect visitor travel time in a complex, multilevel building on
campus. Specifically, he wanted to determine whether different
building signs (building maps versus wall signage) affect the
total amount of time visitors require to reach their destination
and whether that time depends on whether the starting location
is inside or outside the building. Three subjects were assigned
to each of the combinations of signs and starting locations, and
travel time in seconds from beginning to destination was
recorded. How should the data be analyzed?
Starting Room
Interior
Exterior
Wall Signs
141
224
119
339
238
139
Map
85
226
21. 94
129
126
130
a. Completely randomized design
b. Randomized block design
c. 2 x 2 factorial design
d. Kruskal-Wallis rank test
Q11. As a business statistics project, a student examined the
factors that determine parking meter rates throughout the
campus and downtown area. The campus is a group of buildings
located in the center of downtown, with an open central
quadrangle. Data were collected for the price of parking per
hour and the number of blocks to the quadrangle. In addition,
two dummy variables were coded to indicate the location of the
parking meter (See below). The population regression model
hypothesized is
Yi = ß0 + ß1x1i + ß2x2i + ß3x3i + ei
where
Y is the price per hour
x1 is a numerical variable = the number of blocks to the
quadrangle
(Note that if x1 is less than 2, then the meter is on campus; if
x1 is less than 3, then the meter is downtown)
x2 is a dummy variable = 1 if inside downtown and off campus,
0 otherwise
x3 is a dummy variable = 1 if outside downtown and off
campus, 0 otherwise
The following Excel results are obtained.
22. Regression Statistics
Multiple R
9.9659
R Square
0.9331
Adjusted R Square
0.9294
Standard Error
0.0327
Observations
58
ANOVA
df
SS
MS
F
Signif F
Regression
3
0.8094
0.2698
251.1995
1.0964E-31
Residual
54
0.0580
0.0010
Total
57
0.8675
Coeff
StdError
t Stat
P-value
24. c. 5
d. 1
Q13. An economist is interested to see how consumption for an
economy (in $ billions) is influenced by gross domestic product
($ billions) and aggregate price (consumer price index). The
Microsoft Excel output of this regression is partially reproduced
below.
SUMMARY OUTPUT
Regression Statistics
Multiple R
0.991
R Square
0.982
Adjusted R Square
0.976
Standard Error
0.299
Observations
10
ANOVA
df
SS
MS
F
Signif F
Regression
2
33.4163
16.7082
186.325
0.0001
Residual
7
0.6277
26. Q14. Testing for the existence of correlation is equivalent to
a. testing for the existence of the slope (β1).
b. testing for the existence of the Y-intercept (β0).
c. the confidence interval estimate for predicting Y.
d. testing for the existence of the slope (β10).
Q15. As a business statistics project, a student examined the
factors that determine parking meter rates throughout the
campus and downtown area. The campus is a group of buildings
located in the center of downtown, with an open central
quadrangle. Data were collected for the price of parking per
hour and the number of blocks to the quadrangle. In addition,
two dummy variables were coded to indicate the location of the
parking meter (See below). The population regression model
hypothesized is
Yi = ß0 + ß1x1i + ß2x2i + ß3x3i + ei
where
Y is the price per hour
x1 is a numerical variable = the number of blocks to the
quadrangle
(Note that if x1 is less than 2, then the meter is on campus; if
x1 is less than 3, then the meter is downtown)
x2 is a dummy variable = 1 if inside downtown and off campus,
0 otherwise
x3 is a dummy variable = 1 if outside downtown and off
campus, 0 otherwise
The following Excel results are obtained.
Regression Statistics
Multiple R
9.9659
R Square
0.9331
27. Adjusted R Square
0.9294
Standard Error
0.0327
Observations
58
ANOVA
df
SS
MS
F
Signif F
Regression
3
0.8094
0.2698
251.1995
1.0964E-31
Residual
54
0.0580
0.0010
Total
57
0.8675
Coeff
StdError
t Stat
P-value
Intercept
0.5118
0.0136
37.4675
28. 2.4904
X1
-0.0045
0.0034
-1.3275
0.1898
X2
-0.2392
0.0123
-19.3942
5.3581E-26
X3
-0.0002
0.0123
-0.0214
0.9829
Referring to the tables, if one is already outside of downtown
and off campus but decides to park an additional 3 blocks from
the quadrangle, the estimated average parking meter rate will:
a. decrease by 0.0045.
b. decrease by 0.0135.
c. decrease by 0.0139.
d. decrease by 0.4979.
Q16. The following EXCEL output contains the results of a test
to determine if the proportions of satisfied guests at two resorts
are the same or different.
Hypothesized Difference0
Level of Significance 0.05
Group 1
Number of Successes163
Sample Size227
Group 2
29. Number of Successes154
Sample Size262
Group 1 Proportion0.718061674
Group 2 Proportion0.58778626
Difference in Two Proportions 0.130275414
Average Proportion0.648261759
Test Statistic3.00875353
Two-Tailed Test
Lower Critical Value -1.959961082
Upper Critical Value 1.959961082
p-Value 0.002623357
Referring to the data above, if you want to test the claim that
"Resort 1 (Group 1) has a higher proportion of satisfied guests
compared to Resort 2 (Group 2)," the p-value of the test will be
a. 0.00262
b. 0.00262/2
c. 2*(0.00262)
d. 1 - (0.00262/2)
Q17. A real estate builder wishes to determine how house size
(House) is influenced by family income (Income), family size
(Size), and education of the head of household (School). House
size is measured in hundreds of square feet, income is measured
in thousands of dollars, and education is in years. The builder
randomly selected 50 families and ran the µltiple regression.
Microsoft Excel output is provided below:
SUMMARY OUTPUT
Regression Statistics
Multiple R
0.865
R Square
0.748
Adjusted R Square
0.726
31. 3.9545
0.0003
Size
4.2615
0.8062
5.286
0.0001
School
-0.6517
0.4319
-1.509
0.1383
Referring to the tables, one individual in the sample had an
annual income of $10,000, a family size of 1, and an education
of 8 years. This individual owned a home with an area of 1,000
square feet (House = 10.00). What is the residual (in hundreds
of square feet) for this data point?
a. 8.10
b. 5.40
c. -5.40
d. -8.10
Q18. A manager of a product sales group believes the number of
sales made by an employee (Y) depends on how many years that
employee has been with the company (X1) and how he/she
scored on a business aptitude test (X2). A random sample of 8
employees provides the following:
Employee
Y
X1
X2
1
100
10
33. c. 4.698
d. 21.293
Q19. In testing for differences between the means of 2
independent populations, the null hypothesis is:
a. H0: μ1 - μ2 = 2.
b. H0: μ1 - μ2 = 0.
c. H0: μ1 - μ2 > 0.
d. H0: μ1 - μ2 < 2.
Q20. A manager of a product sales group believes the number of
sales made by an employee (Y) depends on how many years that
employee has been with the company (X1) and how he/she
scored on a business aptitude test (X2). A random sample of 8
employees provides the following:
Employee
Y
X1
X2
1
100
10
7
2
90
3
10
3
80
8
9
4
70
5
4
5
34. 60
5
8
6
50
7
5
7
40
1
4
8
30
1
1
Referring to Table 14-1, for these data, what is the estimated
coefficient for the variable representing scores on the aptitude
test, b2?A manager of a product sales group believes the
number of sales made by an employee (Y) depends on how
many years that employee has been with the company (X1) and
how he/she scored on a business aptitude test (X2). A random
sample of 8 employees provides the following:
Employee
Y
X1
X2
1
100
10
7
2
90
3
10
35. 3
80
8
9
4
70
5
4
5
60
5
8
6
50
7
5
7
40
1
4
8
30
1
1
Referring to the table, what is the estimated coefficient for the
variable representing scores on the aptitude test, b2?
a. 0.998
b. 3.103
c. 4.698
d. 21.293
Q21. To test the effects of a business school preparation course,
8 students took a general business test before and after the
course. The results are given below.
36. Student
Exam Score Before Course
Exam Score After Course
1
530
670
2
690
770
3
910
1,000
4
700
710
5
450
550
6
820
870
7
820
770
8
630
610
Referring to the table, at the 0.05 level of significance, the
conclusion for this hypothesis test would be:
a. the business school preparation course does improve exam
score.
b. the business school preparation course does not improve
exam score.
c. the business school preparation course has no impact on
37. exam score.
d. It cannot be drawn from the information given.
Q22. If the p value is less than α in a two-tailed test,
a. the null hypothesis should not be rejected.
b. the null hypothesis should be rejected.
c. a one-tailed test should be used.
d. no conclusion should be reached.
Q23. If the Type I error (α) for a given test is to be decreased,
then for a fixed sample size n
a. the Type II error (β) will also decrease.
b. the Type II error (β) will increase.
c. the power of the test will increase.
d. a one-tailed test must be utilized.
Q24. Psychologists have found that people are generally
reluctant to transmit bad news to their peers.
This phenomenon has been termed the "MM effect." To
investigate the cause of the MM effect, 40 undergraduates
at Duke University participated in an experiment. Each subject
was asked to administer an IQ test to another student
and then provide the test taker with his or her percentile score.
Unknown to the subject, the test taker was a bogus
student who was working with the researchers. The
experimenters manipulated two factors: subject visibility and
success of test taker, each at two levels. Subject visibility was
either visible or not visible to the test taker. Success of
the test taker was either visible or not visible to the test taker.
Success of the test taker was either
top 20% or bottom 20%. Ten subjects were randomly assigned
to each of the 2 x 2 = 4 experimental conditions, then
the time (in seconds) between the end of the test and the
delivery of the percentile score from the subject to the test
taker was measured. (This variable is called the latency to
feedback.) The data were subjected to appropriate analyses
38. with the following results.
Source
df
SS
MS
F
PR > F
Subject visibility
1
1380.24
1380.24
4.26
0.043
Test taker success
1
1325.16
1325.16
4.09
0.050
Interaction
1
3385.80
3385.80
10.45
0.002
Error
36
11,664.00
324.00
Total
39
17,755.20
39. Referring to the table, in the context of this study, interpret the
statement: "Subject visibility and test taker success interact."
a. The difference between the mean feedback time for visible
and nonvisible subjects depends on the success of the test taker.
b. The difference between the mean feedback time for test
takers scoring in the top 20% and bottom 20% depends on the
visibility of the subject.
c. The relationship between feedback time and subject
visibility depends on the success of the test taker.
d. All of the above are correct interpretations.
Q25. A candy bar manufacturer is interested in trying to
estimate how sales are influenced by the price of their product.
To do this, the company randomly chooses 6 small cities and
offers the candy bar at different prices. Using candy bar sales as
the dependent variable, the company will conduct a simple
linear regression on the data below:
City
Price ($)
Sales
River Falls
1.30
100
Hudson
1.60
90
Ellsworth
1.80
90
Prescott
2.00
40
Rock Elm
2.40
38
Stillwater
40. 2.90
32
Referring to the table, what is the coefficient of correlation for
these data?
a. -0.8854
b. -0.7839
c. 0.7839
d. 0.8854
Q26. A ____________ is a numerical quantity computed from
the data of a sample and is used in reaching a decision on
whether or not to reject the null hypothesis.
a. significance level
b. critical value
c. test statistic
d. parameter
Q27. An investment specialist claims that if one holds a
portfolio that moves in opposite direction to the market index
like the S&P 500, then it is possible to reduce the variability of
the portfolio's return. In other words, one can create a portfolio
with positive returns but less exposure to risk.
A sample of 26 years of S&P 500 index and a portfolio
consisting of stocks of private prisons, which are believed to be
negatively related to the S&P 500 index, is collected. A
regression analysis was performed by regressing the returns of
the prison stocks portfolio (Y) on the returns of S&P 500 index
(X) to prove that the private prisons stock portfolio is
negatively related to the S&P 500 index at a 5% level of
significance. The results are given in the following EXCEL
output.
Coefficients
Standard Error
41. T Stat
P-value
Intercept
4.866004258
0.35743609
13.61363441
8.7932E-13
S&P
-0.502513506
0.071597152
-7.01862425
2.94942E-07
Referring to the table, which of the following will be a correct
conclusion?
a. We cannot reject the null hypothesis and, therefore,
conclude that there is sufficient evidence to show that the
prison stock portfolio and S&P 500 index are negatively related.
b. We can reject the null hypothesis and, therefore, conclude
that there is sufficient evidence to show that the prison stock
portfolio and S&P 500 index are negatively related.
c. We cannot reject the null hypothesis and, therefore,
conclude that there is not sufficient evidence to show that the
prison stock portfolio and S&P 500 index are negatively related.
d. We can reject the null hypothesis and conclude that there
is not sufficient evidence to show that the prison stock portfolio
and S&P 500 index are negatively related.
Q28. One criterion used to evaluate employees in the assembly
section of a large factory is the number of defective pieces per
1,000 parts produced. The quality control department wants to
find out whether there is a relationship between years of
experience and defect rate. Since the job is repetitious, after the
initial training period any improvement due to a learning effect
42. might be offset by a loss of motivation. A defect rate is
calculated for each worker in a yearly evaluation. The results
for 100 workers are given in the table below.
Years Since Training Period
< 1 Year
1 - 4 Years
5 - 9 Years
Defect Rate
High
6
9
9
Average
9
19
23
Low
7
8
10
Referring to the table, find the rejection region necessary for
testing at the 0.05 level of significance whether there is a
relationship between defect rate and years of experience.
a. Reject H0 if chi-square > 16.919
b. Reject H0 if chi-square > 15.507
c. Reject H0 if chi-square > 11.143
d. Reject H0 if chi-square > 9.488
43. Q29. A campus researcher wanted to investigate the factors that
affect visitor travel time in a complex, multilevel building on
campus. Specifically, he wanted to determine whether different
building signs (building maps versus wall signage) affect the
total amount of time visitors require to reach their destination
and whether that time depends on whether the starting location
is inside or outside the building. Three subjects were assigned
to each of the combinations of signs and starting locations, and
travel time in seconds from beginning to destination was
recorded. An Excel output of the appropriate analysis is given
below:
ANOVA
Source of Variation
SS
df
MS
F
P-value
F crit
Signs
14008.33
14008.33
0.11267
5.317645
Starting Location
12288
2.784395
0.13374
5.317645
Interaction
48
48
0.919506
5.317645
44. Within
35305.33
4413.167
Total
61649.67
11
Referring to the table, the within (error) degrees of freedom is
a. 1
b. 4
c. 8
d. 11
Q30. If we wish to determine whether there is evidence that the
proportion of successes is higher in group 1 than in group 2, the
appropriate test to use is
a. the Z test.
b. the chi-squared test.
c. the W test.
d. the X test.
Q31. A researcher randomly sampled 30 graduates of an MBA
program and recorded data concerning their starting salaries. Of
primary interest to the researcher was the effect of gender on
starting salaries. Analysis of the mean salaries of the females
and males in the sample is given below.
Size
Mean
Std Dev
Females
18
45. 48,266.7
13,577.63
Males
12
55,000
11,741.29
Std Error = 4,764.82
Means Diff = -6,733.3
Z = -1.4528 2-tailed p value = 0.1463
T = -1.4221 2-tailed p value = 0.1574
Referring to the table, the researcher was attempting to show
statistically that the female MBA graduates have a significantly
lower mean starting salary than the male MBA graduates. From
the analysis in the table, the correct test statistic is:
a. 4,634.72
b. -1.4221
c. -1.4528
d. -6,733.33
Q32. If we are performing a two-tailed test of whether μ = 100,
the probability of detecting a shift of the mean to 105 will be
________ the probability of detecting a shift of the mean to
110.
a. less than
b. greater than
c. equal to
d. not comparable to
Q33. Parents complain that children read too few storybooks
and watch too µch television nowadays. A survey of 1,000
children reveals the following information on average time
spent watching TV and average time spent reading storybooks
Average time spent reading storybooks
Average time
46. spent watching TV
Less than
1 hour
Between
1 and 2 hours
More than
2 hours
Less than 2 hours
90
85
130
More than 2 hours
655
32
8
Referring to the table, to test whether there is any relationship
between average time spent watching TV and average time spent
reading storybooks, the value of the measured test statistic is:
a. -12.59
b. 1.61
c. 481.49
d. 1,368.06
Q34. A large national bank charges local companies for using
their services. A bank official reported the results of a
regression analysis designed to predict the bank's charges (Y) --
measured in dollars per month -- for services rendered to local
companies. One independent variable used to predict service
charge to a company is the company's sales revenue (X) --
measured in millions of dollars. Data for 21 companies who use
the bank's services were used to fit the model:
E(Y) = ß0 + ß1X
47. The results of the simple linear regression are provided below.
Y = -2,700+20X, syx = 65, two-tailed p value = 0.034 (for
testing ß1)
Referring to Table 13-1, interpret the p value for testing
whether ß1 exceeds 0.
a. There is sufficient evidence (at the α = 0.05) to conclude
that sales revenue (X) is a useful linear predictor of service
charge (Y).
b. There is insufficient evidence (at the α = 0.10) to conclude
that sales revenue (X) is a useful linear predictor of service
charge (Y).
c. Sales revenue (X) is a poor predictor of service charge
(Y).
d. For every $1 million increase in sales revenue, we expect a
service charge to increase $0.034.
Q35. A study published in the American Journal of Public
Health was conducted to determine whether the use of seat belts
in motor vehicles depends on ethnic status in San Diego County.
A sample of 792 children treated for injuries sustained from
motor vehicle accidents was obtained, and each child was
classified according to (1) ethnic status (Hispanic or non-
Hispanic) and (2) seat belt usage (worn or not worn) during the
accident. The number of children in each category is given in
the table below.
Hispanic
Non-Hispanic
Seat belts worn
31
148
Seat belts not worn
283
330
48. Referring to the table, which test would be used to properly
analyze the data in this experiment?
a. chi-square test for independence in a two-way contingency
table.
b. chi-square test for equal proportions in a one-way table.
c. ANOVA F test for interaction in a 2 x 2 factorial design.
d. chi-square test for a 2 x 2 factorial design.
Q36. The Journal of Business Venturing reported on the
activities of entrepreneurs during the organization creation
process. As part of a designed study, a total of 71 entrepreneurs
were interviewed and divided into 3 groups: those that were
successful in founding a new firm (n1 = 34), those still actively
trying to establish a firm (n2 = 21), and those who tried to start
a new firm but eventually gave up (n3 = 16). The total number
of activities undertaken (e.g., developed a business plan, sought
funding, looked for facilities) by each group over a specified
time period during organization creation was measured. The
objective is to compare the mean number of activities of the 3
groups of entrepreneurs. Because of concerns over necessary
assumption of the parametric analysis, it was decided to use a
nonparametric analysis. Identify the nonparametric method that
would be used to analyze the data.
a. Wilcoxon Rank Sums Test
b. Wilcoxon Signed Rank Test
c. Kruskal-Wallis Rank Test for Differences in Medians
d. One-way ANOVA F test
Q37. A researcher randomly sampled 30 graduates of an MBA
program and recorded data concerning their starting salaries. Of
primary interest to the researcher was the effect of gender on
starting salaries. Analysis of the mean salaries of the females
and males in the sample is given below.
Size
49. Mean
Std Dev
Females
18
48,266.7
13,577.63
Males
12
55,000
11,741.29
Std Error = 4,764.82
Means Diff = -6,733.3
Z = -1.4528 2-tailed p value = 0.1463
T = -1.4221 2-tailed p value = 0.1574
Referring to the table, the researcher was attempting to show
statistically that the female MBA graduates have a significantly
lower mean starting salary than the male MBA graduates.
According to the test run, which of the following is an
appropriate alternative hypothesis?
a. H1: μfemales > μmales
b. H1: μfemales < μmales
c. H1: μfemales ≠ μmales
d. H1: μfemales = μmales
Q38. A computer used by a 24-hour banking service is supposed
to randomly assign each transaction to one of 5 memory
locations. A check at the end of a day's transactions gave the
counts shown in the table to each of the 5 memory locations,
along with the number of reported errors.
Memory Location:
1
2
3
4
50. 5
Number of Transactions:
82
100
74
92
102
Number of Reported Errors
11
12
6
9
10
The bank manager wanted to test whether the proportion of
errors in transactions assigned to each of the 5 memory
locations differ. Referring to the table, which test would be
used to properly analyze the data in this experiment?
a. chi-square test for independence in a two-way contingency
table
b. chi-square test for equal proportions in a one-way table
c. ANOVA F test for main treatment effect
d. Z test for the difference in two proportions
Q39. If a test of hypothesis has a Type I error probability (α) of
0.01, we mean
a. if the null hypothesis is true, we don't reject it 1% of the
time.
b. if the null hypothesis is true, we reject it 1% of the time.
c. if the null hypothesis is false, we don't reject it 1% of the
time.
d. if the null hypothesis is false, we reject it 1% of the time.
Q40. The following EXCEL output contains the results of a test
to determine if the proportions of satisfied guests at two resorts
51. are the same or different.
Hypothesized Difference 0
Level of Significance 0.05
Group 1
Number of Successes 163
Sample Size 227
Group 2
Number of Successes 154
Sample Size 262
Group 1 Proportion 0.718061674
Group 2 Proportion 0.58778626
Difference in Two Proportions 0.130275414
Average Proportion 0.648261759
Test Statistic 3.00875353
Two-Tailed Test
Lower Critical Value -1.959961082
Upper Critical Value 1.959961082
p-Value 0.002623357
Referring to the table, if you want to test the claim that "Resort
1 (Group 1) has a higher proportion of satisfied guests
compared to Resort 2 (Group 2)," the p-value of the test will be
a. 0.00262
b. 0.00262/2
c. 2*(0.00262)
d. 1 - (0.00262/2)