Statistics - Hypothesis

Question

6. A high school research team wants to know if their Advanced Placement (AP) credits earned is greater than the state average. The state average is 150 credits. Which of the following is the non-directional hypothesis tested?

Group of answer choices

A. The high school AP credits are less than the state average.

B. The high school AP credits are equal to the state average.

C. The high school AP credits are greater than the state average.

D. The high school AP credits are both less than and greater than the state average.

Answer 1

A non-directional hypothesis is a two-tailed hypothesis that does not assume the direction of the difference. (e.g. Average AP credit in this high school is different than the state AP credit average).

The appropriate answer would be "D".

However, that option should be corrected as

The high school AP credits are less than OR greater than the state average.

Because,

A number cannot be both greater than and less than a particular value.