This document is a 10 page course worksheet for a probabilities and statistics class. It contains 9 problems involving constructing various statistical distributions such as frequency, relative frequency, and percent frequency distributions from sample data. It asks students to calculate measures of central tendency and dispersion like mean, median, mode, range, and standard deviation. Students are also asked to create graphs like histograms, box plots, and dot plots to visualize the data. The worksheet provides sample data and guides students through completing tables and selecting the right statistical values or conclusions.
Frost & Sullivan_Entry Interview Questions (English & Math)Max Lee
Wondering what are the questions asked during the entry interview for Frost & Sullivan (Malaysia)? Take a look at this document.
Sharing with you my dear readers who may find it useful.
Feel free to connect with me at maxermesilliam@gmail.com.
Frost & Sullivan_Entry Interview Questions (English & Math)Max Lee
Wondering what are the questions asked during the entry interview for Frost & Sullivan (Malaysia)? Take a look at this document.
Sharing with you my dear readers who may find it useful.
Feel free to connect with me at maxermesilliam@gmail.com.
B Design Microsoft word or ms word is a type of processor soft developed by Microsoft. It was first release to oprate in 1983. The primary an of ms word is to assist user increating professional quality document, letters, reports, resume etc.
What is computer software?
A computer can not do anything in its own so we need to give instructions ot it or to computer to make a desired jobs. It is necessary to specify the sequence of instructions a computer must perfrom or to solve a problem such as a sequence
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
MULTIPLE CHOICE. Record your answer choices. 1.7.2.8.docxgilpinleeanna
MULTIPLE CHOICE. Record your answer choices.
1.7.
2.8.
3.9.
4.10.
5.11.
6.12.
SHORT ANSWER. Record your answers below.
13. (a)
(b)
(c)
14. (a)
(b)
(c)
15. (a)
(b)
(c)
SHORT ANSWER with Work Shown. Record your answers and work.
Problem Number
Solution
16
Answers:
(a)
(b)
(c)
Work for (a), (b), and (c):
17
Answer:
Work:
18
Answer:
Work:
19
Answers:
(a)
(b)
(c)
Work for (a) and (b):
20
Answer:
Work:
21
Answer:
Work:
22
Answers:
(a)
(b)
(c)
(d)
Work for (b), (c), and (d):
23
Answer:
Work:
24
Answer:
Work:
25
Answers:
(a)
(b) Region I:
Region II:
Region III:
Region IV:
Work:
The Logistics Section is responsible for all support requirements needed to facilitate effective and efficient incident management. These requirements include but are not limited to:
-Facilities/Transportation
-Supplies/Equipment maintenance and fuel
-Food services
-Communications/Information technology support
-Emergency responder medical services
Without funding and reimbursements, the ability to respond and recover from incidents will be limited. Because incident response is a very expensive business, costs and finances must be carefully and thoroughly recorded. The Finance/Administration Section manages all activities related to cost summaries and contracts for supplies and services.
Many times high-impact/long-duration incidents are where we see a need for the Logistics and Finance sections to work closely to make sure the necessary supplies are available and then track the associated costs for the supplies.
Write a post to achieve the following:
1. Find an article on the internet and post the link.
2. The article should show an incident where the Logistics and Finance Sections were required due to the size and/or duration of the incident. Please keep the incident to the U.S.
3. Give a summary of the incident from the perspective of the Finance/Logistics sections.
4. Describe the type of resources that Logistics was required to supply, and then report on the methods likely used to track expenses by the Finance Section. Make inferences where this information is not clearly noted in your articles.
Forum Requirements
Please APA cite and reference your sources in your post.
Your initial post must be a minimum of 300 words.
MATH 106 Finite Mathematics 2178-OL4-7981-V1
Page 1 of 10
MATH 106 FINAL EXAMINATION
This is an open-book exam. You may refer to your text and other course materials as you work
on the exam, and you may use a calculator. You must complete the exam individually.
Neither collaboration nor consultation with others is allowed. Use of instructors’ solutions
manuals or online problem solving services in NOT allowed.
Record your answers and work on the separate answer s ...
SAIF ALDIN ALI MADIN
سيف الدين علي ماضي
S96aif@gmail.com
Buckling test
MECHANICS OF MATERIALS
A fundamental condition in all problems is the equilibrium of
internal and external forces. If the system of forces is
disturbed owing to a small displacement of a body, two
principal situations are possible: either the body will return
to its original configuration owing to restoring forces during
displacement, or the body will accelerate farther away from
its original state owing to displacing forces. The latter
situation is termed instable equilibrium.
The instability of structural members subjected to
compressive loading (see Fig. 1(b)) may be regarded as a
mode of failure, even though stress may remain elastic, owing to excessive
deformation and distortion of the structure. This mode of failure is termed
buckling and is prevalent in members for which the transverse dimension is
small compared with the overall length
For helpful CXC Maths Multiple Choice Videos please click below
These videos are very helpful
https://oke.io/dUqlSrd
https://oke.io/UWfOCCP
https://oke.io/FrCDQ
Week 1 Practice SetUniversity of Phoenix MaterialPract.docxnealralix138661
Week 1 Practice Set
University of Phoenix Material
Practice Set 1
Practice Set 1
1.
The following table lists the number of deaths by cause as reported by the
Centers for Disease Control and Prevention
on February 6, 2015:
Cause of Death
Number of Deaths
Heart disease
611,105
Cancer
584,881
Accidents
130,557
Stroke
128,978
Alzheimer's disease
84,767
Diabetes
75,578
Influenza and Pneumonia
56,979
Suicide
41,149
a)
What is the variable for this data set (use words)?
b)
How many observations are in this data set (numeral)?
c)
How many elements does this data set contain (numeral)?
2.
Indicate which of the following variables are quantitative and which are qualitative.
Note:
Spell quantitative and qualitative in lower case letters.
a)
The amount of time a student spent studying for an exam
b)
The amount of rain last year in 30 cities
c)
The arrival status of an airline flight (early, on time, late, canceled) at an airport
d)
A person's blood type
e)
The amount of gasoline put into a car at a gas station
3. A local gas station collected data from the day's receipts, recording the gallons of gasoline each customer purchased. The following table lists the frequency distribution of the gallons of gas purchased by all customers on this one day at this gas station.
Gallons of Gas
Number of Customers
4 to less than 8
78
8 to less than 12
49
12 to less than 16
81
16 to less than 20
117
20 to less than 24
13
a)
How many customers were served on this day at this gas station?
b)
Find the class midpoints. Do all of the classes have the same width? If so, what is this width? If not, what are the different class widths?
c)
What percentage of the customers purchased between 4 and 12 gallons? (do not include % sign. Round numerical value to one decimal place)
4.
The following data give the one-way commuting times (in minutes) from home to work for a random sample of 50 workers.
23
17
34
26
18
33
46
42
12
37
44
15
22
19
28
32
18
39
40
48
16
11
9
24
18
26
31
7
30
15
18
22
29
32
30
21
19
14
26
37
25
36
23
39
42
46
29
17
24
31
What is the frequency for each class 0–9, 10–19, 20–29, 30–39, and 40–49.
Calculate the relative frequency and percentage for each class.
What percentage of the workers in this sample commute for 30 minutes or more?
Note:
Round relative frequency to two decimal places. Complete the table by calculating the frequency, relative frequency, and percentage.
Commuting Times
Frequency
(part a)
Relative Frequency
(part c)
Percentage (%)
(part d)
0-9
?
0.??
?
10-19
?
0.??
?
20-29
?
0.??
?
30-39
?
0.??
?
40-49
?
0.??
?
5.
The following data give the number of text messages sent on 40 randomly selected days during 2015 by a high school student.
32
33
33
34
35
36
37
37
37
37
38
39
40
41
41
42
42
42
43
44
44
45
45
45
47
47
47
47
47
48
48
49
50
50
51
52
53
54
59
61
Each stem has been displayed (left column). Complete this stem-and-leaf display for these data.
Note:
Use a space in between each leaf. For exa.
B Design Microsoft word or ms word is a type of processor soft developed by Microsoft. It was first release to oprate in 1983. The primary an of ms word is to assist user increating professional quality document, letters, reports, resume etc.
What is computer software?
A computer can not do anything in its own so we need to give instructions ot it or to computer to make a desired jobs. It is necessary to specify the sequence of instructions a computer must perfrom or to solve a problem such as a sequence
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
MULTIPLE CHOICE. Record your answer choices. 1.7.2.8.docxgilpinleeanna
MULTIPLE CHOICE. Record your answer choices.
1.7.
2.8.
3.9.
4.10.
5.11.
6.12.
SHORT ANSWER. Record your answers below.
13. (a)
(b)
(c)
14. (a)
(b)
(c)
15. (a)
(b)
(c)
SHORT ANSWER with Work Shown. Record your answers and work.
Problem Number
Solution
16
Answers:
(a)
(b)
(c)
Work for (a), (b), and (c):
17
Answer:
Work:
18
Answer:
Work:
19
Answers:
(a)
(b)
(c)
Work for (a) and (b):
20
Answer:
Work:
21
Answer:
Work:
22
Answers:
(a)
(b)
(c)
(d)
Work for (b), (c), and (d):
23
Answer:
Work:
24
Answer:
Work:
25
Answers:
(a)
(b) Region I:
Region II:
Region III:
Region IV:
Work:
The Logistics Section is responsible for all support requirements needed to facilitate effective and efficient incident management. These requirements include but are not limited to:
-Facilities/Transportation
-Supplies/Equipment maintenance and fuel
-Food services
-Communications/Information technology support
-Emergency responder medical services
Without funding and reimbursements, the ability to respond and recover from incidents will be limited. Because incident response is a very expensive business, costs and finances must be carefully and thoroughly recorded. The Finance/Administration Section manages all activities related to cost summaries and contracts for supplies and services.
Many times high-impact/long-duration incidents are where we see a need for the Logistics and Finance sections to work closely to make sure the necessary supplies are available and then track the associated costs for the supplies.
Write a post to achieve the following:
1. Find an article on the internet and post the link.
2. The article should show an incident where the Logistics and Finance Sections were required due to the size and/or duration of the incident. Please keep the incident to the U.S.
3. Give a summary of the incident from the perspective of the Finance/Logistics sections.
4. Describe the type of resources that Logistics was required to supply, and then report on the methods likely used to track expenses by the Finance Section. Make inferences where this information is not clearly noted in your articles.
Forum Requirements
Please APA cite and reference your sources in your post.
Your initial post must be a minimum of 300 words.
MATH 106 Finite Mathematics 2178-OL4-7981-V1
Page 1 of 10
MATH 106 FINAL EXAMINATION
This is an open-book exam. You may refer to your text and other course materials as you work
on the exam, and you may use a calculator. You must complete the exam individually.
Neither collaboration nor consultation with others is allowed. Use of instructors’ solutions
manuals or online problem solving services in NOT allowed.
Record your answers and work on the separate answer s ...
SAIF ALDIN ALI MADIN
سيف الدين علي ماضي
S96aif@gmail.com
Buckling test
MECHANICS OF MATERIALS
A fundamental condition in all problems is the equilibrium of
internal and external forces. If the system of forces is
disturbed owing to a small displacement of a body, two
principal situations are possible: either the body will return
to its original configuration owing to restoring forces during
displacement, or the body will accelerate farther away from
its original state owing to displacing forces. The latter
situation is termed instable equilibrium.
The instability of structural members subjected to
compressive loading (see Fig. 1(b)) may be regarded as a
mode of failure, even though stress may remain elastic, owing to excessive
deformation and distortion of the structure. This mode of failure is termed
buckling and is prevalent in members for which the transverse dimension is
small compared with the overall length
For helpful CXC Maths Multiple Choice Videos please click below
These videos are very helpful
https://oke.io/dUqlSrd
https://oke.io/UWfOCCP
https://oke.io/FrCDQ
Week 1 Practice SetUniversity of Phoenix MaterialPract.docxnealralix138661
Week 1 Practice Set
University of Phoenix Material
Practice Set 1
Practice Set 1
1.
The following table lists the number of deaths by cause as reported by the
Centers for Disease Control and Prevention
on February 6, 2015:
Cause of Death
Number of Deaths
Heart disease
611,105
Cancer
584,881
Accidents
130,557
Stroke
128,978
Alzheimer's disease
84,767
Diabetes
75,578
Influenza and Pneumonia
56,979
Suicide
41,149
a)
What is the variable for this data set (use words)?
b)
How many observations are in this data set (numeral)?
c)
How many elements does this data set contain (numeral)?
2.
Indicate which of the following variables are quantitative and which are qualitative.
Note:
Spell quantitative and qualitative in lower case letters.
a)
The amount of time a student spent studying for an exam
b)
The amount of rain last year in 30 cities
c)
The arrival status of an airline flight (early, on time, late, canceled) at an airport
d)
A person's blood type
e)
The amount of gasoline put into a car at a gas station
3. A local gas station collected data from the day's receipts, recording the gallons of gasoline each customer purchased. The following table lists the frequency distribution of the gallons of gas purchased by all customers on this one day at this gas station.
Gallons of Gas
Number of Customers
4 to less than 8
78
8 to less than 12
49
12 to less than 16
81
16 to less than 20
117
20 to less than 24
13
a)
How many customers were served on this day at this gas station?
b)
Find the class midpoints. Do all of the classes have the same width? If so, what is this width? If not, what are the different class widths?
c)
What percentage of the customers purchased between 4 and 12 gallons? (do not include % sign. Round numerical value to one decimal place)
4.
The following data give the one-way commuting times (in minutes) from home to work for a random sample of 50 workers.
23
17
34
26
18
33
46
42
12
37
44
15
22
19
28
32
18
39
40
48
16
11
9
24
18
26
31
7
30
15
18
22
29
32
30
21
19
14
26
37
25
36
23
39
42
46
29
17
24
31
What is the frequency for each class 0–9, 10–19, 20–29, 30–39, and 40–49.
Calculate the relative frequency and percentage for each class.
What percentage of the workers in this sample commute for 30 minutes or more?
Note:
Round relative frequency to two decimal places. Complete the table by calculating the frequency, relative frequency, and percentage.
Commuting Times
Frequency
(part a)
Relative Frequency
(part c)
Percentage (%)
(part d)
0-9
?
0.??
?
10-19
?
0.??
?
20-29
?
0.??
?
30-39
?
0.??
?
40-49
?
0.??
?
5.
The following data give the number of text messages sent on 40 randomly selected days during 2015 by a high school student.
32
33
33
34
35
36
37
37
37
37
38
39
40
41
41
42
42
42
43
44
44
45
45
45
47
47
47
47
47
48
48
49
50
50
51
52
53
54
59
61
Each stem has been displayed (left column). Complete this stem-and-leaf display for these data.
Note:
Use a space in between each leaf. For exa.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
1. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 1 of 10
1. Thirty students are completed probability course in the first year of mechanical engineering
department. Their grades are shown below.
B B A F C C
C C B D B DN
B DN F A D D
F B C D A F
DN B DN B A B
(a) Develop a frequency distribution for their grades.
(b) Develop a relative frequency distribution for their grades.
(c) Develop a percent frequency distribution for their grades.
(d) Develop a bar graph.
(e) Construct a pie chart
2. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 2 of 10
2. The following measurements were recorded for the cooking time, in hours, of a certain type of
Meat
3.6 2.5 4.8 4.9 3.6
2.9 3.4 5.6 3.7 2.8
4.4 4.0 5.2 3.0 4.8
4.8 4.0 5.9 6.5 4.8
Assume that the measurements are a simple random sample.
(a) What is the sample size for the above sample?
(b) Calculate the sample mean for these data.
(c) Calculate the sample median.
(d) Plot the data by way of a dot plot.
3. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 3 of 10
3. Construct a stem-and-leaf display for the following data, Then calculate the mean, mode, and
median, for the following data
10.7 4.9 8.9 11.7 6.3 7.7 3.3 4.9 8.3 10.2 11.9
7.7 8.9 6.4 6.3 7.7 3.9 4.9 8.9 10.6 10.9 4.9
8.9 11.7 9.3 7.3 10.3 4.9 8.7 10. 4 7.4 6.9 4.2
4. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 4 of 10
4. The following are historical data on staff salaries (dollars per hour) for 30 schools sampled in
the eastern part of the United States in the early 1970s.
3.79 2.99 2.77 2.91 3.10 1.84 2.52 3.22 3.14 2.68
2.45 2.14 2.67 2.52 2.71 2.75 3.57 3.85 3.54 3.51
3.36 2.05 2.89 2.83 3.13 2.44 2.10 3.71 2.37 3.37
(a) Compute the sample mean and sample standard deviation.
(b) Construct a stem-and-leaf display of the data.
(c) Construct a box plot.
5. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 5 of 10
5. In a certain company the mean annual vacation period is 15 day. Fourteen employees were
randomly chosen from this company and their vacation days inquired. The following data were
obtained: 6, 12, 11, 12, 10, 7, 12, 14, 16, 18, 11, 12, 16, 17. Select the correct answer
1. The range value is
a- 6 b- 12
c- 14 d- 18
2. The Mean value is
a- 12.429 b- 12.418
c- 12 d- 3.54
3. The variance value is
a- 6 b- 12.418
c- 12.429 d- 3.54
4. The Standard deviation value is
a- 6 b- 12.418
c- 12.429 d- 3.54
5. The C.V value is
a- 0.5 b- 14
c- 0.283 d- 0.354
6. The Mode value is
a- 6 b- 12
c- 14 d- 18
7. The Median value is
a- 6 b- 12
c- 14 d- 18
8. The sample size is
a- 11 b- 12
c- 14 d- 18
9. The Maximum value is
a- 6 b- 12
c- 14 d- 18
10. The minimum value is
a- 6 b- 7
c- 11 d- 12
6. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 6 of 10
6. The following data represent the viscosity (friction, as in automobile oil) taken from 120
manufacturing batches (ordered from lowest viscosity to highest viscosity).
12.6 12.8 13.0 13.1 13.3 13.3 13.4 13.5 13.6 13.7 13.7 13.7 13.8
13.8 13.9 13.9 14.0 14.0 14.0 14.1 14.1 14.1 14.2 14.2 14.2 14.3
14.3 14.3 14.3 14.3 14.3 14.4 14.4 14.4 14.4 14.4 14.4 14.4 14.4
14.5 14.5 14.5 14.5 14.5 14.5 14.6 14.6 14.6 14.7 14.7 14.8 14.8
14.8 14.8 14.9 14.9 14.9 14.9 14.9 14.9 14.9 15.0 15.0 15.0 15.0
15.1 15.1 15.1 15.1 15.2 15.2 15.2 15.2 15.2 15.2 15.2 15.2 15.3
15.3 15.3 15.3 15.3 15.4 15.4 15.4 15.4 15.5 15.5 15.6 15.6 15.6
15.6 15.6 15.7 15.7 15.7 15.8 15.8 15.9 15.9 16.0 16.0 16.0 16.0
16.1 16.1 16.1 16.2 16.3 16.4 16.4 16.5 16.5 16.6 16.8 16.9 16.9
17.0 17.6 18.6
Using 7 equal intervals with the lowest starting at 12.
(a) Set up a frequency and a relative frequency distribution.
(b) Construct a frequency polygon and a frequency histogram.
(c) Construct a relative frequency histogram
(d) The median and the mode (analytically and graphically)
(e) The mean and the variance using both the long method and the short-cut method.
(f) Set up a less than and an or-more frequency distributions.
(g) Construct the two O-gives.
(h) Estimate the value below which 75% of the viscosity values fall.
(i) What conclusions can you reach about the viscosity of the chemical?
7. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 7 of 10
7. Complete the table, then select the correct answer.
Class limit f % f d f *d f *d2
10 - 19 10 10 3
- 30
- 90
20 - 29 10 2
- -20 40
30 - 39 f1=22 1
- f1
- 22
40 - 49 25 25 0 0 0
50 - 59 f2=23 1 f2 23
60 - 69 10 2 20 40
Sum 100 -29 215
1. The lower limit for third interval is
a- 29.5 b- 30
c- 39.5 d- 39
2. The upper limit for third interval is
a- 29.5 b- 30
c- 39.5 d- 39
3. The upper boundary for first interval
is
e- 19.5 f- 20
g- 29.5 h- 29
4. The lower boundary for second interval
is
a- 19.5 b- 20
c- 29.5 d- 29
5. The mean value is
a- 45.5 b- 41.6
c- 42.7 d- 14.445
6. The variance value is
a- 45.5 b- 41.6
c- 208.67 d- 14.445
7. The Standard deviation value is
a- 45.5 b- 41.6
c- 42.7 d- 14.445
8. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 8 of 10
8. The C.V value is
a- 6 b- 12.418
c- 18 d- 3.54
9. The Mode value is
a- 45.5 b- 41.6
c- 42.7 d- 14.445
10. The Median value is
a- 45.5 b- 41.6
c- 42.7 d- 14.445
11. The total frequency (sample size) is
a- 6 b- 7
c- 10 d- 100
12. The relative frequency for class two is
a- 0.1 b- 10%
c- 10 d- 100
13. The percentage frequency for first class
is
a- 0.1 b- 10%
c- 10 d- 100
14. The percentage frequency for first class
is
a- 0.1 b- 10%
c- 10 d- 100
15. The class width is
a- 6 b- 7
c- 10 d- 100
16. The number of intervals are
a- 6 b- 7
c- 10 d- 100
17. The class mark for fourth class is
e- 40 f- 40.5
g- 44.5 h- 49.5
9. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 9 of 10
8. Given the following frequency distribution;
Time (min) 11-20 21-30 31-40 41-50 51-60 61-70 71-80 Total
Frequency 3 7 12 16 10 8 4 60
Find (a) Mean and standard deviation by both long and short method;
(b) The coefficient of variation (c) the median; (d) the mode.
10. Northern Border University
College of engineering
Industrial Engineering Department
Year : 2020-2021,1st
Term
Course : Probabilities and. Statistics
Course No.: 1405 -204
Sheet No. 1
Dr. Yehya Mesalam
Page 10 of 10
9. Complete the table then calculates the C.V, mode and median graphically.
Class limit f d f.d f.d2
-
-
-
- 0
-
-
-
0
12
25
45
57
80
86
33
10
0
0
10
20
30
40
50
60
70
80
90
100
31.95 44.95 57.95 70.95 83.95 96.95 109.95122.95