What significance level for a directional hypothesis is the same as .05 for a non-directional hypothesis?
A) .05
B) .025
C) .10
D) .01

Question

Quizplus · Accepted Answer

For a non-directional hypothesis with a significance level of .05, we use a two-tailed test and split the alpha level (.05) equally between the two tails, resulting in .025 in each tail. For a directional hypothesis, we use a one-tailed test and allocate the entire alpha level (.05) to one tail. Therefore, the significance level for a directional hypothesis would be .05, which is higher than the .025 allocated to each tail for a non-directional hypothesis.

What Significance Level for a Directional Hypothesis Is the Same