H0: mu = 85, Hs: mu > 85, alpha = 0.01 Calculated value of Z from the sample is

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H0: mu = 85, Hs: mu > 85, alpha = 0.01 Calculated value of Z from the sample is Z calculated = 1.60 (i.e. the calculated value of Z from sample info) Find (i) the P-value and, (ii) give your conclusion based on the P-value. We have two independent samples with n1 = 17, and n2 = 12 from two normal populations with unknown standard deviations, to test the hypotheses: H0: mu1 - mu2 = 0, Ha: mu1 - mu2 0, at alpha = 0.05 (i) Give the degrees of freedom for the t-test . (ii) Write down the decision rule in terms of critical values, for rejecting H0 i.e. the RR

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H0: mu = 85, Hs: mu > 85, alpha = 0.01 Calculated value of Z from the sample is

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