According to the Consumer Action group, the average credit card interest rate in 2010 was 12.83 percent (based on a sample of 39 cards).A researcher wanted to know if college students at her institution have different interest rates compared to this national statistic.If conducting a single-sample t test, which statement would serve as her research hypothesis?
A) The national interest rate is higher than that of college students, on average.
B) College students have different interest rates on average compared to the nation.
C) The national interest rate is not different from that of college students.
D) College students have the same interest rate as the nation.

Question

Quizplus · Accepted Answer

The researcher wants to know if college students' interest rates are different from the national average, so the research hypothesis should be that "College students have different interest rates on average compared to the nation."

According to the Consumer Action Group, the Average Credit Card