[Solution Library] Overseas Travel A researcher wishes to be 95 \% confident that her estimate of the true proportion of individuals who travel overseas
Question: Overseas Travel A researcher wishes to be \(95 \%\) confident that her estimate of the true proportion of individuals who travel overseas is within \(4 \%\) of the true proportion. Find the sample necessary if, in a prior study, a sample of 200 people showed that 40 traveled overseas last year. If no estimate of the sample proportion is available, how large should the sample be?
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