The results of sampling independent populations: sample 1 from population 1 mean

Question

The results of sampling independent populations: sample 1 from population 1 mean 1000 population variance 400 sample size 50 sample 2 from population 2 mean 1250 population variance 500 sample size 75 Test the claim population 1 mean < population 2 mean at a = 0.01

Options

a.The test statistic -3.093 < lower critical value -2.328, pvalue 0.001, reject H0, conclude h1 < h2

b.The test statistic -3.093 < upper critical value + 2.358, pvalue 0.999, do not reject H0, conclude h1 <= h2

c. The test statistic - 3.093 falls outside the critical values +_ 2.618, pvalue 0.002, reject H0, conclude h1 is not equal to h2

Explanation / Answer

Critical value at alpha = 0.01 = -2.328

So Option-A is the correct answer.

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