How does the result in Prob. 6 change if we use a smaller sample, say, of size
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How does the result in Prob. 6 change if we use a smaller sample, say, of size 5, the other data (x̅ = 58.05, α = 5%, etc.) remaining as before?
Data from Prob. 6
Assuming normality and known variance σ2 = 9, test the hypothesis μ = 60.0 against the alternative μ = 57.0 using a sample of size 20 with mean x̅ = 58.50 and choosing α = 5%.
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