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Math Whizz
Questions (1)
Consider the following data collected in two recent surveys of whether voters in cities A and B favor a ballot proposition in
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Answers (2)
.5 �} .103, because, as the math guru said the formula is (p1 - p2) �} 2.58 �ã(p1(1-p1)/n1 + p2(1-p2)/n2), the 2.58 comes from the z-score table. The question doesn't want you to solve the whole formula, just the first and last.. (175/250)-(43/215)=.5
.5 ± .103
