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14.Waiting times? (in minutes) of customers at a bank where all customers enter a single waiting...

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Basic Math

14.Waiting times? (in minutes) of customers at a bank where allcustomers enter a single waiting line and a bank where customerswait in individual lines at three different teller windows arelisted below. Find the coefficient of variation for each of the twosets of? data, then compare the variation

Bank A (single line)

Bank B (individual lines)

6.4

4.3

6.5

5.5

6.6

5.9

6.8

6.3

7.1

6.7

7.4

7.6

7.4

7.8

7.7

8.4

7.7

9.4

7.8

9.7

The coefficient of variation for the waiting times at Bank A is____%.

?(Round to one decimal place as? needed.)

The coefficient of variation for the waiting times at the Bank Bis ____.

?(Round to one decimal place as? needed.)

Is there a difference in variation between the two data?sets?

A.There is no significant difference in the variations.

B.The waiting times at Bank B have considerably less variationthan the waiting times at Bank A.

c.The waiting times at Bank A have considerably less variationthan the waiting times at Bank B.

Answer & Explanation Solved by verified expert
3.6 Ratings (293 Votes)
For bank AMean 64 65 66 68 71 74 74 77 77 7810 71410Mean 714The sample standard deviation is    See Answer
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