Find the sample size required for a margin of error of 3 percentage points, and then find
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Find the sample size required for a margin of error of 3 percentage points, and then find one for a margin of error of 1.5 percentage points; for both, use a 95% confidence level. Find the ratio of the larger sample size to the smaller sample size. To reduce the margin of error to half, by what do you need to multiply the sample size?
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Related Book For
Essential Statistics
ISBN: 9780134134406
2nd Edition
Authors: Robert Gould, Colleen N. Ryan, Rebecca Wong
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