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Assume you wish to compare the means of two populations and that sigma1^2=9, sigma2^2=25, n=90. Suppose that you allocate n1=n2 observations to each sample. How large must n1 and n2 be in order to obtain the same amount of information as the allocation of n=90 to the two samples that result in the maximum amount of information about (mu1-mu2)?

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