document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182709>Question 1182709</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A political candidate has asked you to conduct a poll to determine what percentage of people support her.<BR>\n" );
document.write( "If the candidate only wants a 1.5% margin of error at a 99% confidence level, what size sample is needed?<BR>\n" );
document.write( "Answer with a whole number.\r<BR>\n" );
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document.write( "n = </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #812808 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=812808\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use 0.5 as the most conservative measure<BR>\n" );
document.write( "error=z(0.995)*sqrt(.5*.5/n)<BR>\n" );
document.write( "0.015=2.576*sqrt(.25/n)<BR>\n" );
document.write( "square both sides<BR>\n" );
document.write( "0000225=1.658944/n<BR>\n" );
document.write( "n=7373.08 or 7374 </SPAN>\n" );
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