A researcher selects a pair of random samples. In Group 1 the scores are 25, 25, 24, 24, 23, 233, 22, 21, 20. In Group 2 the scores are 22, 20, 20, 18, 15, 15, 12, 12, 10.
a. Find the t ratio
b. Do you reject Ho?
c. Do the two groups represent a single population?

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The Answer of A researcher selects a pair of random samples. In Group 1 the scores are 25, 25, 24, 24, 23, 233, 22, 21, 20. In Group 2 the scores are 22, 20, 20, 18, 15, 15, 12, 12, 10.
a. Find the t ratio
b. Do you reject Ho?
c. Do the two groups represent a single population?

A Researcher Selects a Pair of Random Samples