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rovided below are summary statistics for independent simple random samples from two populations. Use the pooled​...

rovided below are summary statistics for independent simple random samples from two populations. Use the pooled​ t-test and the pooled​ t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. X1=20, S1=6, N1=21, X2=22, S2=7, N2= 15 Left tailed test, a=.05 90% confidence interval The 90% confidence interval is from ____ to ____

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