Question

Comcast’s customer service department asks its customers to rate their over the phone service on a scale of 1–20 immediately after their service has been completed. The company then matches each customer’s rating with the number of minutes the person waited on hold. The following table shows the ratings and number of minutes on hold for 10 randomly selected customers. These data can also be found in the Excel file Comcast. xlsx.
a. Calculate the Spearman rank order correlation coefficient.
b. Using α = 0.10, perform a hypothesis test to determine if the population rank correlation coefficient is different than zero.


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  • CreatedJuly 29, 2015
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