document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131236>Question 1131236</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the minimum sample size you should use to assure that your estimate if p will be within the required margin of error around the population p. Margin of error: 0.05; confidence level: 99%; from a prior study, p is estimated by 0.13 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #748882 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=748882\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> margin of error is sqrt(p*(1-p)/n)*2.576, the z-value for 99%<BR>\n" );
document.write( "=sqrt(0.13*0.87/n)*2.576=0.05<BR>\n" );
document.write( "square both sides<BR>\n" );
document.write( "0.0025=6.64*.13*.87/n<BR>\n" );
document.write( "n=300.39 or 301<BR>\n" );
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