For a two-tailed test of significance,
A) the standard error is divided by two
B) the standard error is multiplied by two
C) the critical region is assigned to two places in the sampling distribution
D) there are two null hypotheses, both of which must be disproved to show a significant difference.

Question

Quizplus · Accepted Answer

In a two-tailed test of significance, the critical region is divided between the two tails (ends) of the sampling distribution, allowing for the testing of deviations in both directions from the null hypothesis. This means that significant differences can be detected whether the sample mean is significantly higher or lower than the population mean hypothesized under the null hypothesis.

For a Two-Tailed Test of Significance