Question

(The setup for this question may be repeated on other questions.)

The long-term performance of a hypothesis test showed the following results.

• If the null hypothesis is true, the test will accept the null hypothesis 85% of the time and reject the null hypothesis 15% of the time.
• If the null hypothesis is false, the test will accept the null hypothesis 60% of the time and reject the null hypothesis 40% of the time.

The probability this test will commit a type II error is β= __________ .

Group of answer choices

None of the other choices represent a suitable response.

.40

.15

.60

.85

Answer 1

A Type II error is when we fail to reject a false null hypothesis

If the null hypothesis is false, the test will accept the null hypothesis 60% of the time.

Probability of Type II error = 0.60