In hypothesis testing,Type I error is
A)always set at 5 percent.
B)smaller than or equal to 5 percent.
C)the probability of rejecting H0 when H0 is true.
D)the probability of rejecting H0 when H1 is true.

Question

Quizplus · Accepted Answer

Type I error is the probability of rejecting H0 when H0 is true. It is not always set at 5 percent, rather it depends on the significance level selected by the researcher. It can be smaller than or equal to 5 percent, but it can also be larger depending on the context of the study. Option D is the definition of Type II error, not Type I error.

In Hypothesis Testing,Type I Error Is