Which of the following correctly describes the effect of increasing the alpha level (for example,from .01 to .05)?
A)Increase the likelihood of rejecting H0 and increase the risk of a Type I error
B)Decrease the likelihood of rejecting H0 and increase the risk of a Type I error
C)Increase the likelihood of rejecting H0 and decrease the risk of a Type I error
D)Decrease the likelihood of rejecting H0 and decrease the risk of a Type I error

Question

Quizplus · Accepted Answer

Increasing the alpha level increases the critical region and thus increases the likelihood of rejecting H0. However, it also increases the area in the tails of the distribution, which increases the risk of a Type I error (rejecting a true null hypothesis). So, increasing alpha level will increase the likelihood of rejecting H0 and increase the risk of a Type I error.

Which of the Following Correctly Describes the Effect of Increasing