Researchers used their knowledge of the z distribution to assert that some published data might have been "cleaned" or altered in some way in order for test statistics to pass a cutoff at z of 1.96.That cutoff corresponds to observations that happen less than _____ percent of the time.
A) 1
B) 2.5
C) 5
D) 10

Question

Quizplus · Accepted Answer

The cutoff at z of 1.96 corresponds to observations that happen less than 5% of the time, which is the significance level often used in hypothesis testing. Therefore, the best choice is C.

Researchers Used Their Knowledge of the Z Distribution to Assert