document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=371232>Question 371232</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a random sample of 500 people of a ctty, it was<BR>\n" );
document.write( "found that 160 preferred seafood. Find a 95%<BR>\n" );
document.write( "confidence interval for the actual proportion of<BR>\n" );
document.write( "people who preferred seafood. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #264516 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=264516\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a random sample of 500 people of a city, it was<BR>\n" );
document.write( "found that 160 preferred seafood. <BR>\n" );
document.write( "Find a 95% confidence interval for the actual proportion of<BR>\n" );
document.write( "people who preferred seafood.<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "p-hat = 160/500 = 0.32<BR>\n" );
document.write( "---<BR>\n" );
document.write( "ME = 1.96*sqrt(0.32*0.68/500) = 0.0410<BR>\n" );
document.write( "----<BR>\n" );
document.write( "95% CI: 0.32-0.0410 < p < 0.32+0.0410<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );