In general,a directional test will be _____ than a corresponding nondirectional test if the actual population mean and the hypothesized population mean differ in the specified direction.
A)less accurate
B)less powerful
C)more practical
D)more powerful

Question

Quizplus · Accepted Answer

A directional test has more power to detect a significant difference between the sample mean and the hypothesized population mean when the difference is in the specified direction. Therefore, a directional test is more likely to reject the null hypothesis and produce a significant result, making it more powerful than a corresponding nondirectional test.

In General,a Directional Test Will Be _____ Than a Corresponding