unknown

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what is the estimate population proportion?

I assume it is 0.5 than

std = sqrt(1/2*1/2/n) =0.5/sqrt(n)

for 95% confidence level, k = 1.96

0.008/(0.5/sqrt(n)) = 1.96

sqrt(n) *0.016 = 1.96

n = (1.96/0.016)^2 =15007

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