The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is less than 1.8 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.025. Complete parts (a) through (d) below. E Click on the icon to view the data.

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Chapter1: Starting With Matlab
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The​ P-value of the test statistic is

The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard
deviation of waiting times is less than 1.8 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller
window. Use a significance level of 0.025. Complete parts (a) through (d) below.
Click on the icon to view the data.
Transcribed Image Text:The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is less than 1.8 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.025. Complete parts (a) through (d) below. Click on the icon to view the data.
Customer Waiting Times
(in minutes)
7.7
6.9
4.3
7.4
7.2
7.3
6.4
6.3
7.7
6.4
7.2
6.4
6.6
7.7
8.9
7.7
7.6
8.4
12.2
7.5
6.7
7.1
7.6
6.3
6.3
6.6
7.7
8.8
6.3
6.7
6.4
6.2
8.4
8.8
6.5
7.3
7.6
7.8
8.5
7.3
7.6
6.1
10.7
6.2
6.2
6.3
8.9
6.3
12.8
6.2
8.7
7.4
7.3
7.6
6.1
8.1
6.1
6.4
7.1
7.6
Transcribed Image Text:Customer Waiting Times (in minutes) 7.7 6.9 4.3 7.4 7.2 7.3 6.4 6.3 7.7 6.4 7.2 6.4 6.6 7.7 8.9 7.7 7.6 8.4 12.2 7.5 6.7 7.1 7.6 6.3 6.3 6.6 7.7 8.8 6.3 6.7 6.4 6.2 8.4 8.8 6.5 7.3 7.6 7.8 8.5 7.3 7.6 6.1 10.7 6.2 6.2 6.3 8.9 6.3 12.8 6.2 8.7 7.4 7.3 7.6 6.1 8.1 6.1 6.4 7.1 7.6
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