E MINDTAP ment: Assignment 17 Assignment Score: 0.00% Save Submit Assignment for Grading as Exercise 08.15 (Population Mean: Sigma Unknown) Question 1 of 2 » Hint(s) Check My Work Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 65 weekly reports showed a sample mean of 19.5 customer contacts per week. The sample standard deviation was 5.2. Provide 90% and 95% confidence intervals for the population mean number of weekly customer contacts for the sales personnel. 90% confidence interval, to 2 decimals: 18.48 20.56 95% confidence interval, to 2 decimals: ( 18.28 20.72 Hide Feedback Incorrect Hint(s) Check My Work O- Icon Key zeAssignmentMain.do?takeAssignmentSessionLocator=assignment-take,2aaeebee-c084-4148-b59b-9208e2304be0# Question 1 of 2 . W

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Exercise 08.15 (Population Mean: Sigma Unknown)
Question 1 of 2 »
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Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 65 weekly reports showed a sample mean
of 19.5 customer contacts per week. The sample standard deviațtion was 5.2, Provide 90% and 95% confidence intervals for the population mean number of weekly customer
contacts for the sales personnel.
90% confidence interval, to 2 decimals:
18.48
20.56
95% confidence interval, to 2 decimals:
( 18.28
20.72
Hide Feedback
Incorrect
Hint(s) Check My Work
0- Icon Key
zeAssignmentMain.do?takeAssignmentSessionLocator=assignment-take,2aaeebee-c084-4f48-b59b-9208e2304be0#
Question 1 of 2 »
Transcribed Image Text:nd Tap - Cengage Learhing om/static/nb/ui/evo/index.html?deploymentld%3D59965217903652740813033898&elSBN=9780357131596&id%3D11381315... 田) E MINDTAP Q Search this cour nent: Assignment 17 Assignment Score: 0.00% Save Submit Assignment for Grading as Exercise 08.15 (Population Mean: Sigma Unknown) Question 1 of 2 » Hint(s) Check My Work Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 65 weekly reports showed a sample mean of 19.5 customer contacts per week. The sample standard deviațtion was 5.2, Provide 90% and 95% confidence intervals for the population mean number of weekly customer contacts for the sales personnel. 90% confidence interval, to 2 decimals: 18.48 20.56 95% confidence interval, to 2 decimals: ( 18.28 20.72 Hide Feedback Incorrect Hint(s) Check My Work 0- Icon Key zeAssignmentMain.do?takeAssignmentSessionLocator=assignment-take,2aaeebee-c084-4f48-b59b-9208e2304be0# Question 1 of 2 »
GE
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Exercise 08.17 (Population Mean: Sigma Unknown)
« Question 2 of
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The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10.
Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The file Miami
contains the ratings obtained from the sample of 50 business travelers. Develop a 95% confidence interval estimate of the population mean rating for Miami. Round your
answers to two decimal places.
DATA file
6
4
6
8
7
7
6
3
3
8
10
8
8
7
9.
5
8.
4
3
8
5
4.
4
5
9
9
8
4
8.
9
9
9
7
8
3
10
8
9
6
5.48
8,64
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« Question 2 of
Exercise 08.17 (Population Mean: Sigma Unknown)
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Transcribed Image Text:GE Q Search th E 17 ament: Assignment 17 Assignment Score: 0.00 Save Submit Assignment for Grading ons Exercise 08.17 (Population Mean: Sigma Unknown) « Question 2 of Hint(s) Check My Work The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The file Miami contains the ratings obtained from the sample of 50 business travelers. Develop a 95% confidence interval estimate of the population mean rating for Miami. Round your answers to two decimal places. DATA file 6 4 6 8 7 7 6 3 3 8 10 8 8 7 9. 5 8. 4 3 8 5 4. 4 5 9 9 8 4 8. 9 9 9 7 8 3 10 8 9 6 5.48 8,64 Hide Feedback Incorrect Hint(s) Check My Work 0= Icon Key « Question 2 of Exercise 08.17 (Population Mean: Sigma Unknown) 99+
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