Assuming normality and known variance 2 = 4, test the hypothesis = 30.0 against the
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Assuming normality and known variance σ2 = 4, test the hypothesis μ = 30.0 against the alternative
(a) μ = 28.5,
(b) μ = 30.7, using a sample of size 10 with mean x̅ = 28.5 and choosing α = 5%.
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