A money management firm, which specializes in debt reduction,is interested in the average amount of debt for amarried couple. In previous years, married couples had 4500 dollars, on average, of debt. Due to increased costs of college and mortgage interest rates, the money management firm suspects this averagehas increased in recent years.

If the money management firm carries out an hypothesis test, what forms the rejection region?

Select the correct answer below:

Critical value

Null hypothesis

Test statistic