# Question

Young Adult magazine states the following hypotheses about the mean age of its subscribers.

H0: μ = 28

Ha: μ ≠ 28

a. What would it mean to make a Type II error in this situation?

b. The population standard deviation is assumed known at σ = 6 years and the sample size is 100. With α = .05, what is the probability of accepting H0 for μ equal to 26, 27, 29, and 30?

c. What is the power at μ = 26? What does this result tell you?

H0: μ = 28

Ha: μ ≠ 28

a. What would it mean to make a Type II error in this situation?

b. The population standard deviation is assumed known at σ = 6 years and the sample size is 100. With α = .05, what is the probability of accepting H0 for μ equal to 26, 27, 29, and 30?

c. What is the power at μ = 26? What does this result tell you?

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