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 1–10 (10 = most satisfied).

Activations Satisfaction Activations Satisfaction 36 8.0 19 6.1 25 7.9 28 7.0 40 8.5 33 8.2 38 9.0 25 7.7

a. Calculate the Spearman rank-order correlation coefficient.

b. Using a = 0.05, perform a hypothesis test to determine if the population rank correlation coefficient is more than zero.

AppendixLO1