Question

In: Statistics and Probability

A​ company's customer service department asks its customers to rate their​ over-the-phone service on a scale...

A​ company'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 accompanying table shows the ratings and numbers of minutes on hold for 10 randomly selected customers. Complete parts a through c below.

Minutes Rating
1 14
7 12
3 20
8 15
5 13
2 17
5 10
3 17
5 12
2 15

a. Calculate the sample covariance.

b. Calculate the sample correlation coefficient.

c. Describe the relationship between x and y.

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Expert Solution

orchestra answered 1 year ago
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