By never rejecting the null hypothesis one has completely eliminated the possibility of ______.
A) a type II error
B) a type I error
C) increasing the statistical power
D) decreasing the statistical power

Question

Quizplus · Accepted Answer

By never rejecting the null hypothesis, one has completely eliminated the possibility of a type I error, which is the error of rejecting a true null hypothesis. However, not rejecting the null hypothesis also increases the possibility of a type II error, which is the error of failing to reject a false null hypothesis. Therefore, by not rejecting the null hypothesis, one may decrease the statistical power, which is the ability to detect a true effect or difference when it exists.

By Never Rejecting the Null Hypothesis One Has Completely Eliminated