document.write( "Question 1026085: What sample size is needed to give a margin of error of 5% with a 95% confidence interval?
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Algebra.Com's Answer #641337 by stanbon(75887) $\"\"$ $\"About$

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What sample size is needed to give a margin of error of 5% with a 95% confidence interval?
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\n" ); document.write( "Sample size = n = [1.96/0.05]^2*(1/2)^2 = 385 when rounded up.
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\n" ); document.write( "Stan H.
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