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25. A 95% confidence interval for the mean is (23.7, 31.9). State if the following null hypotheses is rejected at a = 0.05 level of

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25. A 95% confidence interval for the mean is (23.7, 31.9). State if the following null hypotheses is rejected at a = 0.05 level of significance. (a) Ho: M = 30 Vs H1:u # 30 (b) Ho: M = 22 Vs H1: M + 22 (c) Ho: M = 31.2 Vs Hj: M # 31.2 (d) Ho: u = 25 Vs H1: u # 25

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