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In: Statistics and Probability

The values listed below are waiting times​ (in minutes) of customers at two different banks. At...

The values listed below are waiting times​ (in minutes) of customers at two different banks. At Bank​ A, customers enter a single waiting line that feeds three teller windows. At Bank​ B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions.

Bank A

6.46.4

6.66.6

6.76.7

6.86.8

7.17.1

7.27.2

7.57.5

7.87.8

7.87.8

7.87.8

Bank Upper BBank B

4.24.2

5.35.3

5.85.8

6.16.1

6.76.7

7.87.8

7.87.8

8.48.4

9.49.4

10.010.0

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Click the icon to view the table of​ Chi-Square critical values.

Construct

aa

9999​%

confidence interval for the population standard deviation

sigmaσ

at Bank A.

nothing

minless than<sigma Subscript Bank Upper AσBank Aless than<nothing

min

Solutions

Expert Solution

Dear I think you have enter data twice at a single line..and you may interested to calculate 99% confidence interval for population standard deviation of both Banks. If my assumption is right , Carryout the following procedure.. And Give me a THUMBS UP for my work dear...


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