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RES 342 Week 1 Individual Assignment Hypothesis Identification
Article Analysis
RES 342 Week 1 Individual Assignment E-Text
RES 342 Week 2 Individual Quiz
RES 342 Week 2 Team Assignment One Sample Hypothesis Testing
Paper
RES 342 Week 3 Individual Assignment Applying Analysis of Variance
(ANOVA) and Nonparametric Tests Simulation
RES 342 Week 3 Team Assignment Two or More Sample Hypothesis
Testing Paper
RES 342 Week 4 Individual Assignment E Text
RES 342 Week 4 Individual Assignment Parametric and Nonparametric
Data Identification Assignment

RES 342 Week 4 Team Assignment Nonparametric Hypothesis Testing
Paper
RES 342 Week 5 Individual E Text
RES 342 Week 5 Individual Assignment Applying Time Series
Methodologies Simulation
RES 342 Week 5 Team Assignment Regression Paper
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Resource: Ch. 8 of Applied Statistics in Business and Economics
Prepare answers to the following assignments:
Chapter Exercises 8.48

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RES 342 Week 1 Individual Assignment
Hypothesis Identification Article Analysis
Use the University Library or the Electronic Reserve Readings to locate
a peer-reviewed article that reports original research and pertains to a
specific, stated hypothesis that was used to validate a research study.
Use major databases in the Online Collection and the key search words
research studies in to obtain an article.

Select communication, finance, economics, marketing, technology, or
another faculty approved topic for the research study.
Prepare a 350- to 700-word analysis of your selected article. Start by
identifying and summarizing the hypothesis described in the article.
Explain whether the hypothesis was rejected or accepted and what the
implications of this finding are for the study.
Format your paper consistent with APA guidelines.
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Prepare to take a quiz on topics covered in previous weeks.
RES/342 Week One: One Sample Hypothesis Testing
Objective: Identify the formal hypothesis testing process.
1. Hypothesis testing is the statistical process of analyzing sample data
by using probability theory to determine whether a stated hypothesis is
reasonable. For a particular test, a business owner wanted to know
whether changes in a production practice resulted in significant
timesaving in manufacturing the company’s product. The business
owner develops the alternative hypothesis that the population mean after

the change is less than the population mean before the change. To test
this question,
a. 0 a two-tailed test should be applied
b. 0 a left-tailed test should be applied is the correct answer
c. 0 a right-tailed test should be applied
d. 0 more information is required to make a decision
Objective: Perform a hypothesis test of one proportion.
2. The Roman Senate has become concerned about the loyalty of the
army in Gaul commanded by Julius Caesar. They claim that, of the
80,000 men in the army, at least 28,000 are foreign barbarians. Caesar
believes that there are fewer barbarians, so the Senate should not worry.
He polls a legion of 1,000 men and finds that 340 of them are

barbarians. Assume the value of the test statistic is -0.70. Calculate the
p-value for this test using Microsoft® Excel®.
a. 0 =NORMSDIST(-0.7) yes
b. 0 =TDIST(-0.70,999,1)
c. 0 =2*(NORMSDIST(-0.7))
d. 0 =TDIST(0.7,999,2)
Objective: Perform a hypothesis test of one population mean using the
standard normal distribution.
3. The manager of a fast food restaurant is concerned that it is taking
too much time for drive-thru customers to be processed. The time period
of concern is from when a customer’s order is placed to when he or she
receives his or her food. An acceptable amount of time for this process
has been 1.3 minutes. To address this concern, a sample test was

conducted. A sample of 24 random customers was taken and it was
determined that the processing time was 1.41 minutes, with a standard
deviation of 0.12 minutes. Is this difference significant? At the 0.05
significance level, which of these statements is correct?
a. 0 The critical value is ±1.96.
b. 0 The critical value is 1.714. yes
c. 0 The test statistic is 0.92.
d. 0 The test statistic is 4.58.
Objective: Interpret the results of hypothesis tests.

4. The mean length of a small counterbalance bar is 43 millimeters.
There is concern that the adjustments of the machine producing the bars
have changed. Test the claim, at the 0.02 level, that there has been no
change in the mean length. The alternate hypothesis is that there has
been a change. Twelve bars (n = 12) were selected at random and their
lengths were recorded. The lengths are, in millimeters, 42, 39, 42, 45,
43, 40, 39, 41, 40, 42, 43, and 42. The mean of the sample is 41.5 and
the standard deviation is 1.784. Computed, t equals – 2.913. Has there
been a statistically significant change in the mean length of the bars?
a. 0 A larger test sample is needed.
b. 0 Yes, because the computed t lies in the area beyond the critical
value correct
c. 0 No, because the information given is not complete
d. 0 No, because the computed t lies in the area to the right of –2.718
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RES 342 Week 2 Team Assignment One Sample
Hypothesis Testing Paper
Use the ratio or interval numerical data from one of the data sets
available through the Data Sets link on your student website.
Develop one research question from which you will formulate a research
hypothesis.
Prepare a 1,050- to 1,750-word paper describing the results of a
hypothesis test of one population mean or population proportion.

Include the following in your paper:
Formulate both a numerical and verbal hypothesis statement regarding
your research issue.
Perform the five-step hypothesis test on data pertaining to your
selection.
Describe the results of your test and explain how the findings from this
hypothesis testing may be used to answer your research question.
Include your raw data tables and the results of the computations of your
z-test or t-test using graphical and tabular methods of displaying data
and results.
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Applying Analysis of Variance (ANOVA) and
Nonparametric Tests Simulation
Resource: Applying ANOVA and Nonparametric Tests Simulation
Complete the Applying ANOVA and Nonparametric Tests simulation
located on your student website.
Prepare a 350- to 700-word summary addressing the following items:
What are three lessons you learned relative to ANOVA and
nonparametric tests?

As a result of using this simulation, what concepts and analytic tools will
you be able to use in your workplace (i.e., how do you expect to apply
what you learned)?
Based on your experience, what additional information would you
recommend to the key decision maker in the simulation to solve the
challenge given?
Format your paper consistent with APA guidelines
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.
Resource: Ch. 10 & 11 of Applied Statistics in Business and Economics

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RES 342 Week 3 Team Assignment Two or More
Sample Hypothesis Testing Paper

Use the numerical data from one of the data sets available through the
Data Sets link on your student website.
Develop one business research question from which you will formulate a
research hypothesis that will test two or more populations.
Prepare a 1,050- to 1,750-word paper describing the results of a
hypothesis test of two populations or more than two populations.
Formulate both a numerical and verbal hypothesis statement regarding
your research issue.
Perform the five-step hypothesis test on data pertaining to your
selection.
Describe the results of your test, and explain how the findings from this
hypothesis testing can be used to answer your research question.

Include your raw data tables and the results of your computations in
your paper, using graphical and tabular methods of displaying data and
results.
Formatyou paper consistent with APA guidelines.
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RES 342 Week 4 Individual Assignment E Text

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Parametric and Nonparametric Data
Identification Assignment
Resources: Parametric and Nonparametric Data Identification
Assignment

Complete the University of Phoenix Material, Parametric and
Nonparametric Data Identification Assignment located on your student
website.
************************************************
Prepare to take a quiz on topics covered in previous weeks.
RES/342 Week Two: Two or More Sample Hypothesis Testing
Objective: Apply hypothesis testing to different populations and samples
in business research situations.

5. In conducting research that looks at differences in populations,
samples are used for numerous reasons. Using entire populations in a
test is difficult, so various sampling techniques are applied. In situations
in which the population variance is unknown, the Student t distribution
is often used. To use this distribution, certain assumptions must be
made. Which of the following statements is not correct?
a. 0 The t distribution is a family of distributions.
b. 0 It is a symmetrical, mound shape distribution.
c. 0 It is a continuous distribution.
d. 0 It has less spread than the standard normal distribution.
Objective: Perform a hypothesis test of two population means using the
standard normal distribution.

6. The Ohio State Patrol has identified eight intersections in Clermont
County of high risk, due to the number of accidents. To address these
concerns, the state patrol wants to make some changes in the traffic light
patterns at these intersections. A proposal was developed to do a 4-
month test of these changes at the eight intersections to see whether a
significant decrease in accidents occurred. The number of accidents 2
months before the modifications at the eight intersections was 57 and the
number of accidents 2 months after the modification was 37. To conduct
the test, the .01 significance level was selected. The test statistic was -
2.415. What would be the critical value for the test decision to be made?
a. 0 2.624
b. 0 -2.998
c. 0 2.947
d. 0 2.602
Objective: Perform a hypothesis test of two proportions.

7. Historically, single-income households or individuals have made up
about 27 percent of the housing market. A sample of 80 recent
mortgages indicated that 24 single-income families or individuals
purchased a new home. Has there been a change in this historical belief?
a. 0 The market has not changed.
b. 0 The market is generally difficult to predict due to the changing
economy.
c. 0 The market has changed.
d. 0 More information is needed to make any statement.

Objective: Determine when to use an ANOVA for managerial decisions.
8. A business owner is trying to decide between three different ads for
the yellow pages. The ads are of different sizes and costs. The owner
wants to get the best deal possible to save money, but wants to
effectively reach potential customers. The question is whether there is a
significant difference between the three different ads in their
effectiveness in reaching customers. To make a more informed decision,
the manager should choose which statistical test?
a. 0 Linear regression correlation
b. 0 Goodness-of-fit test
c. 0 Simple linear regression
d. 0 Analysis of variance (ANOVA)

Objective: Perform an ANOVA.
9. On-Time, a package delivery company, just purchased 14 new trucks
from three different companies. Five trucks were purchased from
manufacturer A, four from B, and five from C. The cost of maintaining
each truck was recorded. On-Time used an ANOVA to test whether the
mean maintenance costs of the trucks from each manufacturer were
equal. To make the decision regarding this hypothesis, a critical value is
required. What would be the critical value for the decision when the 0.01
significance level is used?
a. 0 6.22
b. 0 7.56
c. 0 7.21
d. 0 6.93

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RES 342 Week 4 Team Assignment
Nonparametric Hypothesis Testing Paper
Use the same research question and data from the Learning Team
Meeting Two assignment.
Conduct the equivalent, nonparametric test of hypothesis using the five-
step process.
Prepare a 1,050- to 1,750-word paper describing the results of the
nonparametric hypothesis test. Include the following in your paper:

Formulate a hypothesis statement regarding your research issue.
Perform the five-step hypothesis test on the data.
Explain which nonparametric test you used to analyze your data and
why you chose that test.
Interpret the results of your test, and explain the differences, if any, that
you observe from your Week Three paper.
results.
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ApplyingTime Series Methodologies Simulation
Resources: Applying Time Series Methodologies
Complete the Applying Time Series Methodologies simulation.
Prepare a 350-word memo toMyra Reid, the Vice President of
Production at Blue Inc. Inform Myra of your forecasts and explain the
reasons for your decision.

Account for results of the previous two cycles of the simulation in your
explanation to Myra.
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RES 342 Week 4 Team Assignment
Nonparametric Hypothesis Testing Paper
Use the same research question and data from the Learning Team
Meeting Two assignment.
Conduct the equivalent, nonparametric test of hypothesis using the five-
step process.

Prepare a 1,050- to 1,750-word paper describing the results of the
nonparametric hypothesis test. Include the following in your paper:
Perform the five-step hypothesis test on the data.
Explain which nonparametric test you used to analyze your data and
why you chose that test.
Interpret the results of your test, and explain the differences, if any, that
you observe from your Week Three paper.
results.
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RES 342 Week 5 Team Assignment Regression
Paper
Use the numerical data from one of the data sets available through the
Data Sets link on your student website.
Develop one research question and formulate a hypothesis which may be
tested with linear regression analysis.
Prepare a 1,050- to 1,750-word paper describing the results of the linear
regression analysis on your collected data.

Perform a regression hypothesis test on the data.
Interpret the results of your regression hypothesis test.
results.
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RES 351 Week 1 Discussion Question 2

Why is research ethics important in business? Describe the rights
and obligations of the participant, researcher, and research
sponsor? A data processing analyst for a research supplier finds
that a preliminary computer run of survey results show that
consumers love a client’s new product. The employee buys a large
block of the client’s stock. Discuss the ethical ramifications of this
decision. Which research participant or participants will be
harmed by this action?

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