document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1161303>Question 1161303</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A sample of 150 U.S. adults is composed of 100 women and 50 men. Estimate the confidence interval for the male population with 99% confidence.<BR>\n" );
document.write( "CI=YZ(y)\r<BR>\n" );
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document.write( "99% CI= 0.23 to 0.43<BR>\n" );
document.write( " How do I show my work? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #784982 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=784982\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z*SE, where z is the particular z associated with the CI and SE is sqrt(p(1-p)/n)\r<BR>\n" );
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document.write( "the half-interval is z(0.995)*sqrt{(1/3)(2/3)/150}  or sqrt (p*(1-p)/n)<BR>\n" );
document.write( "=2.576*sqrt(2/1350)=0.0992<BR>\n" );
document.write( "the interval is 1/3+/-0.0992 or (0.234, 0.432) </SPAN>\n" );
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