The owner of Get-A-Away Travel has recently surveyed a random sample of 480 customers to determine whether the mean age of the agency's customers is over 28. The appropriate hypotheses are H0: μ = 28, Ha: μ 28. If he concludes the mean age is over 28 when it is not, he makes a __________ error. If he concludes the mean age is not over 28 when it is, he makes a __________ error.
A) Type I; Type II
B) Type II; Type II
C) Type I; Type I
D) Type II; Type I

Question

The owner of Get-A-Away Travel has recently surveyed a random sample of 480 customers to determine whether the mean age of the agency's customers is over 28. The appropriate hypotheses are H0: μ = 28, Ha: μ > 28. If he concludes the mean age is over 28 when it is not, he makes a __________ error. If he concludes the mean age is not over 28 when it is, he makes a __________ error.
A) Type I; Type II
B) Type II; Type II
C) Type I; Type I
D) Type II; Type I

Quizplus · Accepted Answer

Concluding the mean age is over 28 when it is not is a Type I error (rejecting a true null hypothesis). Concluding the mean age is not over 28 when it is, is a Type II error (failing to reject a false null hypothesis).

The Owner of Get-A-Away Travel Has Recently Surveyed a Random