Question: Assuming that both populations are normallydistributed, construct a 95 % confidence interval about 12. (1 represents the mean of the experimental group and 2 represents

Assuming that both populations are normallydistributed, construct a 95% confidence interval about 12. (1 represents the mean of the experimental group and 2 represents the mean of the controlgroup.)

Experimental Control

n 25 22

minus over x 45.1 43.8

s 4.5 9.1

The confidence interval has a lower bound of __?__and an upper bound of __?___.

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