You perform 2000 significance tests using a significance level,$\alpha$,of 0.10.Assume that all of the null hypotheses for the 2000 significance tests are true.How many of the 2000 significance tests would be statistically significant?
A)200
B)1800
C)2000
D)0

Question

Quizplus · Accepted Answer

When the significance level (alpha) is set to 0.10, it means there is a 10% chance of rejecting the null hypothesis when it is actually true (Type I error). Therefore, if all 2000 null hypotheses are true, we would expect 10% of them to be incorrectly rejected, which is 200 tests.

You Perform 2000 Significance Tests Using a Significance Level α\alphaα ,Of 010Assume That All of the Null Hypotheses for the 2000

You Perform 2000 Significance Tests Using a Significance Level $\alpha$ ,Of 010Assume That All of the Null Hypotheses for the 2000