Explain how to perform a two-sample z-test for the difference between two popula

Question

Explain how to perform a two-sample z-test for the difference between two population means using independent samples with sigma_1 and sigma_2 known. Choose the correct answer below. A. State the hypotheses and identify the claim. Specify the level of significance. Find the critical value(s) and identify the rejection region(s). Find the standardized test statistic. Make a decision and interpret it in the context of the claim. B. Make a decision and interpret it in the context of the claim. Find the standardized statistic. Find the critical value(s) and identify the rejection region(s). State the hypotheses and identify the claim. Specify the level of significance. C. Find the critical value(s) and identify the rejection region(s). Specify the level of significance. State the hypotheses and identify the claim. Find the standardized statistic. Make a decision and interpret it in the context of the claim. D. Find the standardized test statistic. State the hypotheses and iden

Explanation / Answer

Formula to compute 2-sample Z test:

Z(obtained)=[(X1bar-X2bar)/(sigmaXbar-Xbar)

sigmaXbar-Xbar=sqrt [Sigma1^2/N1-Sigma2^2/N2]

Option A)

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