As a measure of productivity, Verizon Wireless records the number of customers each of its retail employees activates weekly. An activation is defined as either a new customer signing a cell phone contract or an existing customer renewing a contract. The following table shows the number of weekly activations for eight randomly selected employees along with their job satisfaction levels rated on a scale of 110 (10 = most satisfied). This data can also be found in the Excel file Verizon satisfaction.xlsx.

a. Calculate the sample covariance.

b. Calculate the sample correlation coefficient.

c. Describe the relationship between x and y.

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Activations Satisfaction Activations Satisfaction 36 25 40 38 8.0 7.9 8.5 9.0 19 6.1 7.0 8.2 7.7 28 25