A Researcher Selects a Pair of Random Samples

question 53

Short Answer

A researcher selects a pair of random samples. In Group 1 the scores are 21, 19, 177, 13, 11, 9, 7.In Group 2 the scores are 20, 18, 15, 11, 11, 8,4.
a. Find the t ratio
b. As a two-tail t, should Ho be rejected? If rejected, state the probability of the alpha error.
c. Do the two groups represent a single population?

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