Suppose that Princess Cruise Lines would like to determine if the satisfaction rating of a customer is related to the number of cruises the person has taken with the company. The following table shows the number of customers who rated their cruises with Princess as Excellent, Good, Average, Fair, or Poor, along with the number of cruises the customers have taken with the company:

Number of Cruises Rating 1–3 4–6 7 or More Excellent 20 26 25 Good 42 20 20 Average 18 15 12 Fair 10 6 8 Poor 4 7 7

a. Using a = 0.05, perform a chi-square test to determine if the number of cruises and a customer’s satisfaction rating are independent of one another.

b. What conclusions can be made based on your results?

c. Verify your results using PHStat.

AppendixLO1