calculate sp2, the pooled sample variance that should be used in the pooled-variance t test.

calculate sp2, the pooled sample variance that should be used in the pooled-variance t test.

Given the following information,
calculate sp2, the pooled sample
variance that should be used in the pooled-variance t test.
s12 = 4
s22 = 6
n1 = 16 n2
= 25


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