Withα= .05,how are the boundaries for the critical region determined?
A)Boundaries are drawn so there is 2.5% (.025) in each tail of the distribution.
B)Boundaries are drawn so there is 5% (.05) in each tail of the distribution.
C)Boundaries are drawn so there is 10% (.10) in each tail of the distribution.
D)Boundaries are drawn so there is 5% (.05) in the center of the distribution.

Question

Quizplus · Accepted Answer

The critical region is the area in the tails of the distribution beyond which we reject the null hypothesis. For alpha level of .05, we split the probability of the tails evenly between the two tails, giving us .025 in each tail. Therefore, the boundaries are drawn so there is 2.5% (.025) in each tail of the distribution.

Withα= 05,how Are the Boundaries for the Critical Region Determined