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Confidence interval for the mean difference ud

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Reference no: EM13944685

1) A sample of 9 paired observations generates the following data: d(bar) = 1.61 and S^2d= 2.88

a) Construct 95% confidence interval for the mean difference Ud.

b) Using the confidence interval, test whether the mean difference differs zero. EXPLAIN.

Reference no: EM13944685

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