Suppose you want to estimate the difference between two population proportions correct to within 0.03 with probability 0.90. If prior information suggests that p1 = 0.4 and p2 * 0.8, and you want to select independent random samples of equal size from the populations, how large should the sample sizes be? A) n =n2 - 1203 C) n -n2 - 963 B) nị -n2 = 1925 D) n - n2 = 1708

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4) Suppose you want to estimate the difference between two population proportions correct to within 0.03 with
probability 0.90. If prior information suggests that p1 = 0.4 and p2 = 0.8, and you want to select independent
random samples of equal size from the populations, how large should the sample sizes be?
A) n1 = n2 = 1203
B) n1 =n2 = 1925
C) ni = n2 = 963
D) ni = n2 = 1708
Transcribed Image Text:4) Suppose you want to estimate the difference between two population proportions correct to within 0.03 with probability 0.90. If prior information suggests that p1 = 0.4 and p2 = 0.8, and you want to select independent random samples of equal size from the populations, how large should the sample sizes be? A) n1 = n2 = 1203 B) n1 =n2 = 1925 C) ni = n2 = 963 D) ni = n2 = 1708
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