9.85 Suppose that, in a large-sample estimate of for two populations with respective variances and , a

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9.85 Suppose that, in a large-sample estimate of for two populations with respective variances and , a total of n observations is to be selected. How should these n observations be allocated to the two populations so that the length of the resulting confidence interval will be minimized?

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Probability And Statistics For Engineers

ISBN: 9781133006909

5th Edition

Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr

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