Two independent random samples are taken from two populations The results of these samples are summarized in the following table Sample 1 n1 148 X1 15 2 s 3 0 Sample 2 n 135 x2 11 3 $ 2 1 a Form a 90 confidence interval for ( M2) b Test Ho (1 2) 0 against Ha ( 2) 0 Use a 01 c What sample size would...

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Two independent random samples are taken from two populations. The results of these samples are summarized in

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Two independent random samples are taken from two populations. The results of these samples are summarized in the following table. image text in transcribed

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Statistics Plus New Mylab Statistics With Pearson Etext Access Card Package

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Authors: James Mcclave ,Terry Sincich

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Two independent random samples are taken from two populations. The results of these samples are summarized in

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Sample 1 = n1 148 == X1 15.2 s = 3.0 Sample 2 n = 135 x2 = 11.3 $ = 2.1 a. Form a 90% confidence interval for ( - -M2). b. Test Ho: (1 2) = 0 against Ha: ( - 2) 0. Use a = .01. c. What sample size would be required if you wish to 2) to within 2 with 90% confidence? estimate (1 Assume that n = n2.

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Statistics Plus New Mylab Statistics With Pearson Etext Access Card Package

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