The probability of committing a Type I error is stated by ______; the probability of committing a Type II error is stated by ______.
A) beta; alpha
B) alpha; beta
C) a p value; a p value
D) the power; the power

Question

Quizplus · Accepted Answer

The probability of committing a Type I error (rejecting a true null hypothesis) is stated by alpha, while the probability of committing a Type II error (failing to reject a false null hypothesis) is stated by beta. Option A is reversed, option C is incomplete as the p value represents the probability of obtaining a test statistic as extreme as the one observed assuming the null hypothesis is true, and option D mentions power, which is the complement of beta and represents the probability of correctly rejecting a false null hypothesis.

The Probability of Committing a Type I Error Is Stated