Question: 3 Marks on an exam in a statistics course are assumed to be normally distributed with unknown mean but with variance equal to 5. A

3 Marks on an exam in a statistics course are assumed to be normally distributed with unknown mean but with variance equal to 5. A sample of four students is selected, and their marks are 52, 63, 64, 84. Assess the hypothesis H0 : µ = 60 by computing the relevant P-value and compute a 0.95-confidence interval for the unknown µ

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