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July 4, 2015

Homework Help: Stat Help

Posted by Shannon on Thursday, October 6, 2011 at 12:08am.

A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 4% if 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 same proportion is available, how large should a sample be????

show your work please so i can understand :P

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