document.write( "Question 875286: Find the minimum sample size required to estimate a population mean μ of daily
\n" ); document.write( "randfall. We want 99% confidence that the sample mean is within .010 inches of
\n" ); document.write( "the population mean, and the population standard deviation is known to be .212 inches.
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #528083 by reviewermath(1029) $\"\"$ $\"About$

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Q:
\n" ); document.write( "Find the minimum sample size required to estimate a population mean μ of daily
\n" ); document.write( "randfall. We want 99% confidence that the sample mean is within .010 inches of
\n" ); document.write( "the population mean, and the population standard deviation is known to be .212 inches.
\n" ); document.write( "A:
\n" ); document.write( " $\"z%5B0.005%5D+\"$ = 2.5758
\n" ); document.write( "n = $\"%28%282.5758%2A.212%29%2F.010%29%5E2\"$ ≈ 2982
\n" ); document.write( "Therefore, the required sample size is at least $\"highlight%282982%29\"$ \n" ); document.write( "

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