document.write( "Question 1119225: f you want to be
\n" ); document.write( "95
\n" ); document.write( "95% confident of estimating the population proportion to within a sampling error of
\n" ); document.write( "plus or minus 0.08 comma
\n" ); document.write( "ą0.08, what sample size is needed? \n" ); document.write( "

Algebra.Com's Answer #734723 by Boreal(15235) $\"\"$ $\"About$

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Assume p=0.5, which is most conservative
\n" ); document.write( "error=z*sqrt*p*(1-p))/n
\n" ); document.write( "error^2=z^2*0.25/n
\n" ); document.write( "n*err^2=0.25 z^2
\n" ); document.write( "n*0.0064=0.25*1.96^2
\n" ); document.write( "n=150.0625 or 151\r
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