document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1112631>Question 1112631</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In	a	Gallup	poll of	557	randomly	selected	adults,	284	said	that	they	were	<BR>\n" );
document.write( "underpaid.	Construct	a	95%	confidence	interval	estimate	for	the	proportion	<BR>\n" );
document.write( "of	adults	who	say	they	are	underpaid. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #727684 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=727684\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  In	a	Gallup	poll of	557	randomly	selected	adults,	284	said	that	they	were	<BR>\n" );
document.write( "underpaid.	Construct	a	95%	confidence	interval	estimate	for	the	proportion	<BR>\n" );
document.write( "of	adults	who	say	they	are	underpaid. <BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "sample proportion = 284/557 = 0.5099<BR>\n" );
document.write( "Margin of Error = z*sqrt(pq/n) = 1.96*sqrt[0.5099*0.4901/557] = 0.0415<BR>\n" );
document.write( "----<BR>\n" );
document.write( "95% CI:: 0.5099-0.0415 < p < 0.5099+0.0415<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" );