When rejection regions are located at both ends of the sampling distribution for t, a test is used.
A)two-tailed
B)parametric
C)directional
D)one-tailed

Question

Quizplus · Accepted Answer

When rejection regions are located at both ends of the sampling distribution for t, it is indicative of a two-tailed (or two-sided) test. This type of test is used when the research hypothesis is not directional and the null hypothesis could be rejected if the sample mean is significantly different from the population mean in either direction (i.e., too high or too low). Therefore, the best choice is option A.

When Rejection Regions Are Located at Both Ends of the Sampling