document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1187180>Question 1187180</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Out of 300 people sampled, 195had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #819222 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=819222\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p=195/300=0.65<BR>\n" );
document.write( "95% half-interval for a proportion is z(0.975)*sqrt(p(1-p)/n)<BR>\n" );
document.write( "so this is 1.96*sqrt(0.65*0.35/300)<BR>\n" );
document.write( "=0.054<BR>\n" );
document.write( "the interval is (0.596, 0.704) </SPAN>\n" );
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