SOLUTION: You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99.5% co
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Question 1119286: You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99.5% confident that you estimate is within 0.5% of the true population proportion. How large of a sample size is required? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99.5% confident that you estimate is within 0.5% of the true population proportion. How large of a sample size is required?
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Since E = z*sqrt[pq/(n)]
n = [z/E]^2*p*q
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Ans: n = [2.8070/0.005]^2*(1/2)(1/2) = 78795 when rounded up
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Cheers,
Stan H.
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