The values listed below are waiting times (in minutes) of customers at two diffe
ID: 3264732 • Letter: T
Question
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 foods three seller windows. At Bank B, customers may enter any one of three different lines that have formed at three windows. Answer the following questions Click the icon to view the table of Chi-Square critical values. Construct a 90% confidence interval for the population standard deviation at Bank A. (Round to two decimal places as needed.) Construct a 90% confidence interval for the population standard deviation at Bank B. (Round to two decimal places as needed.) Interpret the results found in the previous parts. Do the confidence intervals suggest a difference in the among tries? Does the single line system or the multiple line system seem to be a better engagement? A. The variation appears to be significantly lower with a multiple line system. The multiple line system appears to be better. B. The variation appears to be significantly lower with a single line system. The multiple line system appears to be better. C. The variation appears to be significantly lower with a multiple line system. The single line system appears to be better. D. The variation appears to be significantly lower with a single line system. The single line system appears to be better.Explanation / Answer
Bank A
0.3851 < < 0.8687 <---- This is our 90% confidence interval
Stack B
1.3915 < < 3.1388 <---- This is our 90% confidence interval
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