document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1148521>Question 1148521</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level.<BR>\n" );
document.write( "95% confidence; n = 2388, x = 1672 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #769895 by </B><A HREF=/tutors/aboutme.mpl?userid=amarjeeth123><B>amarjeeth123(570)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=amarjeeth123><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=769895\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We are given that x=1672 and n=2388<BR>\n" );
document.write( "ph=(x/n)=(1672/2388)=0.7<BR>\n" );
document.write( "Significance level=1-confidence=1-0.95=0.05<BR>\n" );
document.write( "Critical z-value=z(at alpha/2)=z(0.05/2)=z(at 0.025)=1.96(from z-table)<BR>\n" );
document.write( "SE=Standard error of ph=SE=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28ph%2A%281-ph%29%2Fn%29 ALIGN=MIDDLE  ALT=\"sqrt%28ph%2A%281-ph%29%2Fn%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=0.009377<BR>\n" );
document.write( "E=Critical z-value*SE=1.96*0.009377=0.01838<BR>\n" );
document.write( "Margin of Error=E=0.01838<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );