An experimenter using the .05 alpha level determined that two means were not significantly different. In actual fact, the null hypothesis is false. What error has been committed, and what were the chances of its occurrence?
A) Type II error, cannot determine probability
B) Type II error, 1 chance in 20
C) Type I error, cannot determine probability
D) Type I error, 1 chance in 20

Question

Quizplus · Accepted Answer

A Type II error occurs when the null hypothesis is not rejected when it is false. The probability of a Type II error (beta) cannot be determined without more information, such as the power of the test.

An Experimenter Using the