Mathematics, 21.10.2020 16:01, plssshelp

Suppose we wish to test the hypotheses: H(o): u=15 H(1): u does not = 15 where we know that σ^2 = 9.0. If the true mean is 20, what sample size must you choose to ensure that the probability of Type II error is no greater than 0.1?

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Suppose we wish to test the hypotheses: H(o): u=15 H(1): u does not = 15 where we know that σ^2 = 9....