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Find a 95 Percent Confidence Interval for μ1 − μ2,where

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Find a 95 percent confidence interval for μ1 − μ2,where n1 = 9,n2 = 6,
Find a 95 percent confidence interval for μ<sub>1</sub> − μ<sub>2</sub>,where n<sub>1</sub> = 9,n<sub>2</sub> = 6, = 64, = 59,s<sub>1</sub><sup>2</sup> = 6,and s<sub>2</sub><sup>2</sup> = 3.(Assume equal population variances. )= 64,
Find a 95 percent confidence interval for μ<sub>1</sub> − μ<sub>2</sub>,where n<sub>1</sub> = 9,n<sub>2</sub> = 6, = 64, = 59,s<sub>1</sub><sup>2</sup> = 6,and s<sub>2</sub><sup>2</sup> = 3.(Assume equal population variances. )= 59,s12 = 6,and s22 = 3.(Assume equal population variances. )

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