document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121361>Question 1121361</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Margin of&#8203; error: seven percentage&#8203; points; confidence level 90&#8203;%; from a prior&#8203; study, ModifyingAbove p with caret is estimated by the decimal equivalent of 58&#8203;%<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #737254 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=737254\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> CI 90% has z of 1.645<BR>\n" );
document.write( "margin of error is +/- z*SE=0.07<BR>\n" );
document.write( "1.645*sqrt(.58*.42/n)=0.07<BR>\n" );
document.write( "square everything<BR>\n" );
document.write( "2.71*.58*.42/n=0.0049<BR>\n" );
document.write( "n=134.72 or 135<BR>\n" );
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