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Sir, I am stuck on this question 3. (a) Let {X1, X2, ...,X2s) be a random sample of size n = 25 from N(#, o?),

Sir, I am stuck on this question

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3. (a) Let {X1, X2, ...,X2s) be a random sample of size n = 25 from N(#, o?), where 0? = 3.24 is known. A researcher decides to test: Ho : / = 15 vs. H1 : /

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