22. In a study of brand loyalty in the automotive industry, new-car customers were asked whether the make of their new car was the same as the make of their previous car (Business Week, May 8, 2000). The breakdown of 600 responses shows the brand loyalty for domestic, Euro- pean, and Asian cars.

Manufacturer Purchased Domestic European Asian Same Make 125 55 68 Different Make 140 105 107

a. Conduct a hypothesis test to determine whether brand loyalty is independent of the manufacturer. Use a = .05. What is your conclusion?

b. If a significant difference is found, which manufacturer appears to have the greatest brand loyalty?