1. A national drugstore chain would use the chi-square goodness-of-fit test for a particular product category to determine which of the following?
a. Whether sales follow a uniform distribution throughout Canada.
b. Whether observed sales revenues matched expected sales revenues.
c. Whether merchandising managers can forecast what quantities to order for the holiday season.
2. Why should the goodness-of-fit test not be used when any of the expected frequencies is less than 5?