Question: 42. Suppose in Problem 37 that it had been agreed to take equal sample sizes from the two populations. What size samples should be selected

42. Suppose in Problem 37 that it had been agreed to take equal sample sizes from the two populations. What size samples should be selected so that we can be 99% confident that the margin of error in estimating the difference of two population means is no more than two points? Use the sample variances given in Problem 37 as estimates of

σ2 1 and σ2 2.

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