document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1093246>Question 1093246</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the given data to find the minimum sample size required to estimate a population proportion or percentage.\r<BR>\n" );
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document.write( "Margin of error:0.04<BR>\n" );
document.write( "confidence level: 95%<BR>\n" );
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document.write( "p and q unknown.\r<BR>\n" );
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document.write( "n = _____ (Round up to the nearest&#8203; integer.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #707950 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=707950\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> half interval is the margin of error=0.04=1.96*sqrt(.5*.5/n); we use .5 for p and q, because they will give the largest value for n (most conservative).  <BR>\n" );
document.write( "squaring everything<BR>\n" );
document.write( "0.0016=3.8416*.25/n<BR>\n" );
document.write( "0.0016n=0.96<BR>\n" );
document.write( "divide by 0.0016<BR>\n" );
document.write( "n=600.25 so round to 601 ANSWER<BR>\n" );
document.write( "square root of (0.25/600)=0.0204<BR>\n" );
document.write( "multiply that by 1.96 to get 0.04 </SPAN>\n" );
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