If a null hypothesis is rejected at a significance level of .01,it will ____________ be rejected at a significance level of .05
A)Always
B)Sometimes
C)Never

Question

Quizplus · Accepted Answer

If a null hypothesis is rejected at a significance level of .01, it means that the probability of making a Type I error (rejecting a true null hypothesis) is less than 1% or 0.01. On the other hand, if we test the same hypothesis at a higher significance level of .05, the probability of making a Type I error increases to 5% or 0.05. Therefore, if the null hypothesis is rejected at a lower significance level, it will always be rejected at a higher significance level.

If a Null Hypothesis Is Rejected at a Significance Level