Waiting times​ (in minutes) of customers in a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the mean and median for each of the two​samples, then compare the two sets of results.

Single Line: 6.5 6.6 6.7 6.8 7.0 7.3 7.6 7.8 7.8 7.8

Individual Lines: 4.2 5.2 5.9 6.3 6.5 7.8 7.8 8.7 9.4 10.1

The mean waiting time for customers in a single line is _ minutes.

The median waiting time for customers in a single line is _minutes.

The mean waiting time for customers in individual lines is _minutes.

The median waiting time for customers in individual lines is _minutes.

Determine whether there is a difference between the two data sets that is not apparent from a comparison of the measures of center. If​ so, what is​ it?

A.The times for customers in individual lines are much more varied than the times for customers in a single line.

B.The times for customers in a single line are much more varied than the times for customers in individual lines.

C.There is no difference between the two data sets.