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suppose we wish to test the null hypothesis that the means of two populations are equal. We decide to use the pooled-variance t procedure to

suppose we wish to test the null hypothesis that the means of two populations are equal. We decide to use the pooled-variance t procedure to carry out the test. We draw independent samples of 40 observations from each population, and find population mean1 =11.4, population mean2= 3.2, and SE(X1-X2)=4.6. What is the value of the appropriate t statistic?

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