The Jones and McFarlin Company provides call center support for a number of electronics manufacturers. Customers call in to receive assistance from a live technician for the products they have purchased from a retailer. Jones and McFarlin are experimenting with a new automated system that attempts to provide answers to customer questions. One issue of importance is the time customers have to spend on the line to get their question answered. The company has collected a sample of calls using each system and recorded the following times in seconds:

a. Compute the mean and standard deviation for the time to complete calls using the automated response.
b. Compute the mean and standard deviation for the time to complete calls to live service representatives.
c. Compute the coefficient of variation for the time to complete calls to the automated system and the live representatives. Which group has the greater relative variability in the time to complete calls?

d. Construct box and whisker plots for the time required to complete the two types of calls and briefly discuss. 

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Time to Complete the Call (in seconds) 131 80 140 118 79 94 103 145 113 100 122 Automated Response 170 177 150 208 151 127 147 140 109 184 119 149 129 152 Live Response