The one-tailed test is commonly used in marketing research because
A)there is typically some hypothesized or preferred direction to the outcome.
B)it is more powerful statistically than the two-tailed alternative.
C)it is easier to calculate than the two-tailed alternative.
D)Both a and b.
E)a,b,and c.

Question

Quizplus · Accepted Answer

A one-tailed test is often used when there is a specific direction of interest (A) and it is more powerful statistically because it has more power to detect an effect in one direction (B).

The One-Tailed Test Is Commonly Used in Marketing Research Because