Consider the follow ing com peting hypotheses and accompanying sample data drawn independently. H0: m1 - m2

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Consider the follow ing com peting hypotheses and accompanying sample data drawn independently.

H0: m1 - m2 = 0 W1 = 80 W2 = 40 HA: m 1 - m2 ≠ 0 n1 = 7 n2 = 8

a. Determine the value of the test statistic.

b. Specify the decision rule at the 5% significance level.

c. What is the conclusion?

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