In a one-tail test, the p-value is found to be equal to 0.032. If the test had been two-tail, the p-value would have been:
A)0.064.
B)0.080.
C)0.016.
D)0.066.

Question

Quizplus · Accepted Answer

For a one-tail test, we are only interested in one direction of the distribution, while for a two-tail test, we are interested in both directions. Therefore, the p-value in a two-tail test would be double the p-value in a one-tail test. Thus, 0.032 × 2 = 0.064. Therefore, the best choice is A.

In a One-Tail Test, the P-Value Is Found to Be