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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 7.77.7 7.77.7 7.77.7 Bank Upper BBank B 4.24.2 5.55.5 5.95.9 6.16.1 6.86.8 7.77.7 7.77.7 8.68.6 9.39.3 10.010.0 LOADING... Click the icon to view the table of​ Chi-Square critical values. Construct aa 9090​% confidence interval for the population standard deviation sigmaσ at Bank A. nothing minless than

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