A two-tailed hypothesis test:
A)would not be used if the test statistic could be negative.
B)will double the probability of rejecting the null hypothesis.
C)is used when the direction of the test is of no research interest.
D)would lead to rejection more often than a one-tailed test at the same α.

Question

Quizplus · Accepted Answer

A two-tailed hypothesis test is used when the direction of the test is of no research interest, meaning the researcher is interested in determining whether the sample mean is different from some hypothesized value, but not in which direction. Therefore, it is not affected by the sign of the test statistic and will not double the probability of rejecting the null hypothesis. In fact, it would lead to rejection less often than a one-tailed test at the same α level since it has a smaller critical value.

A Two-Tailed Hypothesis Test