SOLUTION: Find the sample size necessary to achieve the following:Margin of error E=0.005, confidence level=99%, when the p is unknown. Again, assume this is an estimation of th population p

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Question 474843: Find the sample size necessary to achieve the following:Margin of error E=0.005, confidence level=99%, when the p is unknown. Again, assume this is an estimation of th population proportoin
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The margin of error is approximately given by
, where 2.575+=+z%5B0.995%5D
when the parameter p is unknown.
==> 0.005+=+1.2875%2Fsqrt%28n%29, or n = 66,306.25.
So sample size must be at least 66,307.