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Assuming that both populations are normally​ distributed, construct a 95​% confidence interval about

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μ1−μ2. (μ1 represents the mean of the experimental group and μ2 represents the mean of the control​ group.).

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Experimental                   Control

N=25                                    17

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X=47.5                                  48.5

S=5.6                                    11.2

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