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Problem 2. 16 independent normal observations were collected from a population with unknown mean u and known variance o2 = 4. We want to test

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Problem 2. 16 independent normal observations were collected from a population with unknown mean u and known variance o2 = 4. We want to test Ho : M = 0 us Ha : MO (a) (2 points) Write down the GLRT rejection region for the problem. (b) (5 points) Consider an alternative test that rejects Ho if | > 1. Compute the level of significance (Here x is the sample mean of x's). (c) (11 points) Compute the power of test from part (a) and part (b) for the alternative u = 1.5. Which test seems better w.r.t. the power at u = 1.5

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