A bank branch director is concerned with increasing the return rate for customers. One aspect of first impressions by customer relates to the time it takes to deliver the checkbook to the customer after check-in to the counter. A random sample of 20 deliveries on a particular day were selected in Counter1 of the bank, and a random samples of 20 deliveries were selected in Counter2 of the bank. See the below results.. Need to Analyze the data and determine whether there is a difference in the mean delivery time in the two counters of the bank branch. (Use α= 0.01)
counter1 counter2
8.36 5.28
8.91 6.38
8.96 6.57
9.04 6.61
9.13 6.68
9.37 6.77
9.51 7.20
9.76 7.57
9.89 7.95
9.91 8.44
10.57 8.53
10.59 8.89
10.70 8.92
10.85 8.95
11.06 9.23
11.68 9.25
11.79 9.29
11.83 9.30
12.37 10.03
13.67 10.61