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Create confidence interval for difference in true means

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Reference no: EM13114693

Sample 1: n1=56, sumation xi,1=5,142, sumation x squared i,1=473,896
sample 2: n2=27, sumation xi,2=2,415, sumation x sq. i,2=216,387
Sample are independent from Normal populations with equal variances

a.Can you conclude that u1 is not equal to u2 at alpha=.05? State the hypothesis in orders of 1-2

b. construct a 99% confidence interval for the difference in true means. State the confidence interval in terms of 2-1

Reference no: EM13114693

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