The probability of committing a Type I error when the null hypothesis is true as an equality is
A) the confidence level.
B) β.
C) greater than 1.
D) the level of significance.

Question

Quizplus · Accepted Answer

The probability of committing a Type I error when the null hypothesis is true as an equality is defined as the level of significance, which is usually denoted by α. Therefore, the correct answer is D, the level of significance. The confidence level is equal to 1 minus the level of significance, and β represents the probability of committing a Type II error, which is not related to the null hypothesis being true. Choice C, greater than 1, is not a valid option for the probability of committing a Type I error, as it is always between 0 and 1.

The Probability of Committing a Type I Error When the Null