Suppose a researcher wants to make sure that the probability of committing a Type I error is less than 5%.How can the researcher control for this?
A) set the value for a Type II error at .05
B) set the alpha level at .05
C) place the rejection region in both tails
D) set the alpha level at .05 and place the rejection region in both tails

Question

Quizplus · Accepted Answer

Setting the alpha level at .05 is the most direct way to control for the probability of committing a Type I error. The alpha level represents the researcher's willingness to accept the risk of making a false positive claim. By setting it at .05, the researcher is saying they are only willing to accept a 5% chance of making a Type I error. It is not necessary to set the value for a Type II error or place the rejection region in both tails to control for the probability of committing a Type I error.

Suppose a Researcher Wants to Make Sure That the Probability