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.
