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Question: Consider H0: μ = 80 versus H1: μ ≠ 80 for a population that is normally distributed.
a. A random sample of 25 observations taken from this population produced a sample mean of 77 and a standard deviation of 8. Using α = .01, would you reject the null hypothesis?
b. Another random sample of 25 observations taken from the same population produced a sample mean of 86 and a standard deviation of 6. Using α = .01, would you reject the null hypothesis?
Comment on the results of parts a and b.
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