The customer service department of a phone company is experimenting with two different systems. On

Monday they try the first system which is

based on an automated menu system.

On Tuesday they try the second system in which each caller is immediately connected with a live agent. A

quality control manager selects a sample of seven calls each day. He records the time for each customer to

have his

or her question answered. The times (in minutes) are listed below. Find the coefficient of

variation for each of the two sets of data, then compare the variation. Round results to one decimal place.

Automated Menu: 11.7 7.4 3.9 2.9 9.2 6.3 5.5

Live agent: 6.2 2.9 4.4 4.1 3.4 5.2 3.7