document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1162839>Question 1162839</A>: <I><SPAN STYLE=\"word-break: break-all;\"> When 347 college students are randomly selected and surveyed, it is found that 117 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #786738 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=786738\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> half-interval for 99% CI is z(0.995)*sqrt (p(1-p)/n), where p=117/347 or 0.337<BR>\n" );
document.write( "z is 2.576<BR>\n" );
document.write( "sqrt term is 0.0254<BR>\n" );
document.write( "half-interval is that product or 0.0654<BR>\n" );
document.write( "add to and subtract that from mean<BR>\n" );
document.write( "(0.272, 0.402) </SPAN>\n" );
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