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TSU Tests to Compare Two Means & Sample for Variances Null Hypothesis Worksheet
This assignment is intended to test your knowledge of how to appropriately compare two means. The data file (attached file ...
TSU Tests to Compare Two Means & Sample for Variances Null Hypothesis Worksheet
This assignment is intended to test your knowledge of how to appropriately compare two means. The data file (attached file: data_file.xlsx) has 50 randomly selected student debt amounts from 2018and 50 randomly selected student debt amounts from 2013.The data fields included are as follows:Debt in 2018 (dollars)Debt in 2013 (dollars)A university representative wants to know whether the sample data provide enough evidence to believe there is a difference between the debt amounts in the two years. The null and alternative hypotheses are shown below.Null Hypothesis: Mean Student Debt in 2018 is equal to Mean Student Debt in 2013Alternative Hypothesis: Mean Student Debt in 2018 is not equal to Mean Student Debt in 2013Complete the following tasks:1.Run an F-test for two sample variances using an alpha level of 0.05 and answer the following questions:Which of the two years has the higher mean? What are the values?Which of the two years has the higher variance? What are the values?Based on the statistical output, would you conclude that variances are equal or not equal? Provide an appropriate/authoritative explanation leveraging the statistical output.2.Run an appropriate t-test (assuming either equal or unequal variances based on your conclusion in 1c above) using an alpha level of 0.05and answer the following questions:Is this a one-tailed or two-tailed test? Provide an appropriate/authoritative explanation that fully explains the choice.Based on the statistical output, would you conclude that means are equal or not equal? Provide an appropriate/authoritative explanation leveraging the statistical output.Using everyday language that could be understood by parents and students, what does the analysis say about student debt in 2018versus 2013? Provide an appropriate/authoritative explanation leveraging the statistical output (e.g., use confidence level, rationale, etc.)Make sure that you run all the required analyses using the Data Analysis Toolpak in Excel and SUBMIT the Data Analysis Output along with the Data file in a Single Excel workbook that shows all your output. You should also submit a separate Word document that fully, and professionally, responds to each question.Run all required analyses and submit them along with the data file in a single Excel workbook that shows all your output and provide responses to all of the questions in a Word document.Resourceshttps://www.youtube.com/watch?v=qI_RmXU1tOYhttps://www.youtube.com/watch?v=OHHhzLHakKAhttps://www.youtube.com/watch?v=L-jfenou5hI
Statastics
Imagine you are in a
game show. There are 10 prizes hidden on a game board with 100 spaces. One prize is wort ...
Statastics
Imagine you are in a
game show. There are 10 prizes hidden on a game board with 100 spaces. One prize is worth $50, two are worth $20, and another seven
are worth $10. You have to pay $5 to the host if your choice is not
correct. Let the random variable x be
the winning.
(a)
(1 pts) Complete the following probability distribution. (Show
the probability in fraction format and explain your work)
x
P(x)
-$5
$10
$20
$50
(b) What if your expected
winning or loss
in this game? Be specific in your answer whether it’s winning or
loss. (Show work and round the answer to
two decimal places)
(c)
What is the standard
deviation of the probability distribution? (Show work and round the answer to
two decimal places)
Grossmont College Distribution of Sample Proportions Discussion
Learn by Doing exercises.
Prompt
The National Health Survey uses household interviews to describe the health-related ...
Grossmont College Distribution of Sample Proportions Discussion
Learn by Doing exercises.
Prompt
The National Health Survey uses household interviews to describe the health-related habits of U.S. adults. From these interviews they estimate population parameters associated with behaviors such as alcohol consumption, cigarette smoking, and hours of sleep for all U.S. adults.
In the 2005-2007 report, they estimated that 30% of all current smokers started smoking before the age of 16. Imagine that we want to verify this estimate. So we randomly select a sample of 100 smokers and calculate the proportion who started smoking before the age of 16. How much error do we expect in the sample proportions if the 30% is correct for the population overall? Use the applet and a give an error based on 2 standard deviations.
Houston Community College System Statistics Questions
Please find the practice quizzes in the attached files. if you need any other documents please let me know. thanks Last se ...
Houston Community College System Statistics Questions
Please find the practice quizzes in the attached files. if you need any other documents please let me know. thanks Last semester, a cluster of six students all submitted the same incorrect answer on one problem. Their work showed the same calculation error at an early step. So, do your own work, and do nothing to make me suspicious. Remember: a poor grade is a temporary inconvenience, but guilt is eternal.This is not intended to be a hard exam. It is meant to be somewhat challenging, but it is also meant to be informative. The data are real, and the inferences you draw are trustworthy. I intend for you to interpret every word and phrase literally. There are no trick questions. If you suspect that you have found an error, please contact me.Page 10 has a table of chi-squared critical values. It was copied and pasted directly from lecture.Pages 12–16 have tables for you to show your work calculating means, variances, and chi-square statistics.If you do not have a printer, then you can hand-write each the tables in a few minutes. I strongly recommend that you print the exam and show your work. If you use software to complete the calculations, then print your output. When the tables are filled in, use a scanner – an actual scanner or an app on your phone, such as Genius Scan to turn the pages into a PDF that you can upload and/or email.Page 17 has a table of t* critical values at the 95% confidence level. You can also use any table posted on Blackboard, shown in the lectures, or printed in a textbook. However, this table I provided has two advantages: it shows all degrees of freedom from 1 to 212, and it is precise to four decimal points.
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TSU Tests to Compare Two Means & Sample for Variances Null Hypothesis Worksheet
This assignment is intended to test your knowledge of how to appropriately compare two means. The data file (attached file ...
TSU Tests to Compare Two Means & Sample for Variances Null Hypothesis Worksheet
This assignment is intended to test your knowledge of how to appropriately compare two means. The data file (attached file: data_file.xlsx) has 50 randomly selected student debt amounts from 2018and 50 randomly selected student debt amounts from 2013.The data fields included are as follows:Debt in 2018 (dollars)Debt in 2013 (dollars)A university representative wants to know whether the sample data provide enough evidence to believe there is a difference between the debt amounts in the two years. The null and alternative hypotheses are shown below.Null Hypothesis: Mean Student Debt in 2018 is equal to Mean Student Debt in 2013Alternative Hypothesis: Mean Student Debt in 2018 is not equal to Mean Student Debt in 2013Complete the following tasks:1.Run an F-test for two sample variances using an alpha level of 0.05 and answer the following questions:Which of the two years has the higher mean? What are the values?Which of the two years has the higher variance? What are the values?Based on the statistical output, would you conclude that variances are equal or not equal? Provide an appropriate/authoritative explanation leveraging the statistical output.2.Run an appropriate t-test (assuming either equal or unequal variances based on your conclusion in 1c above) using an alpha level of 0.05and answer the following questions:Is this a one-tailed or two-tailed test? Provide an appropriate/authoritative explanation that fully explains the choice.Based on the statistical output, would you conclude that means are equal or not equal? Provide an appropriate/authoritative explanation leveraging the statistical output.Using everyday language that could be understood by parents and students, what does the analysis say about student debt in 2018versus 2013? Provide an appropriate/authoritative explanation leveraging the statistical output (e.g., use confidence level, rationale, etc.)Make sure that you run all the required analyses using the Data Analysis Toolpak in Excel and SUBMIT the Data Analysis Output along with the Data file in a Single Excel workbook that shows all your output. You should also submit a separate Word document that fully, and professionally, responds to each question.Run all required analyses and submit them along with the data file in a single Excel workbook that shows all your output and provide responses to all of the questions in a Word document.Resourceshttps://www.youtube.com/watch?v=qI_RmXU1tOYhttps://www.youtube.com/watch?v=OHHhzLHakKAhttps://www.youtube.com/watch?v=L-jfenou5hI
Statastics
Imagine you are in a
game show. There are 10 prizes hidden on a game board with 100 spaces. One prize is wort ...
Statastics
Imagine you are in a
game show. There are 10 prizes hidden on a game board with 100 spaces. One prize is worth $50, two are worth $20, and another seven
are worth $10. You have to pay $5 to the host if your choice is not
correct. Let the random variable x be
the winning.
(a)
(1 pts) Complete the following probability distribution. (Show
the probability in fraction format and explain your work)
x
P(x)
-$5
$10
$20
$50
(b) What if your expected
winning or loss
in this game? Be specific in your answer whether it’s winning or
loss. (Show work and round the answer to
two decimal places)
(c)
What is the standard
deviation of the probability distribution? (Show work and round the answer to
two decimal places)
Grossmont College Distribution of Sample Proportions Discussion
Learn by Doing exercises.
Prompt
The National Health Survey uses household interviews to describe the health-related ...
Grossmont College Distribution of Sample Proportions Discussion
Learn by Doing exercises.
Prompt
The National Health Survey uses household interviews to describe the health-related habits of U.S. adults. From these interviews they estimate population parameters associated with behaviors such as alcohol consumption, cigarette smoking, and hours of sleep for all U.S. adults.
In the 2005-2007 report, they estimated that 30% of all current smokers started smoking before the age of 16. Imagine that we want to verify this estimate. So we randomly select a sample of 100 smokers and calculate the proportion who started smoking before the age of 16. How much error do we expect in the sample proportions if the 30% is correct for the population overall? Use the applet and a give an error based on 2 standard deviations.
Houston Community College System Statistics Questions
Please find the practice quizzes in the attached files. if you need any other documents please let me know. thanks Last se ...
Houston Community College System Statistics Questions
Please find the practice quizzes in the attached files. if you need any other documents please let me know. thanks Last semester, a cluster of six students all submitted the same incorrect answer on one problem. Their work showed the same calculation error at an early step. So, do your own work, and do nothing to make me suspicious. Remember: a poor grade is a temporary inconvenience, but guilt is eternal.This is not intended to be a hard exam. It is meant to be somewhat challenging, but it is also meant to be informative. The data are real, and the inferences you draw are trustworthy. I intend for you to interpret every word and phrase literally. There are no trick questions. If you suspect that you have found an error, please contact me.Page 10 has a table of chi-squared critical values. It was copied and pasted directly from lecture.Pages 12–16 have tables for you to show your work calculating means, variances, and chi-square statistics.If you do not have a printer, then you can hand-write each the tables in a few minutes. I strongly recommend that you print the exam and show your work. If you use software to complete the calculations, then print your output. When the tables are filled in, use a scanner – an actual scanner or an app on your phone, such as Genius Scan to turn the pages into a PDF that you can upload and/or email.Page 17 has a table of t* critical values at the 95% confidence level. You can also use any table posted on Blackboard, shown in the lectures, or printed in a textbook. However, this table I provided has two advantages: it shows all degrees of freedom from 1 to 212, and it is precise to four decimal points.
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