Question: You are given the following information:

s 12 = 4 s 22 = 6

n 1 = 16 n 2 = 25

1. Calculate the degrees of freedom that should be used in the pooled-variance t test. Show how you obtain your answer.
2. Calculate s p2, the pooled sample variance that should be used in the pooled-variance t test. Show how you obtain your answer.

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