If the experimentwise alpha for three tests is .05,then what is the value for testwise alpha?
A).05
B).02
C).15
D)There is not enough information to answer this question.

Question

Quizplus · Accepted Answer

Experimentwise alpha refers to the overall probability of making a Type I error in a set of multiple hypothesis tests. In this case, the experimentwise alpha is .05, which means that the probability of making at least one Type I error among the three tests is .05.

Testwise alpha, on the other hand, refers to the probability of making a Type I error in a single hypothesis test. To calculate the testwise alpha, we need to divide the experimentwise alpha by the number of tests. Therefore, testwise alpha = .05 / 3 = .0167 (rounded to 2 decimal places).

Since none of the answer choices match this calculation exactly, the best choice is B, which is closest to the calculated value of testwise alpha (.02).

If the Experimentwise Alpha for Three Tests Is