Using α = 10%, you test the null hypothesis that Ho:μ = 100 against H1:μ
100.
You have a sample of size 16, and you know σ = 20.
(a) Express the rejection region in terms of Y.
(b) If the true mean is 105, what is β?
(c) If the true mean is 110, what is β?
Refer to the information in Practice Exercise 6. What sample size would you recommend if you wanted a power of 95% when the true mean is 110?
Exercise 6
Using α = 10%, you test the null hypothesis that Ho:μ = 100 against H1:μ
100.
You have a sample of size 16, and you know σ = 20.
(a) Express the rejection region in terms of Y.
(b) If the true mean is 105, what is β?
(c) If the true mean is 110, what is β?