document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1056849>Question 1056849</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.	In a Gallup poll of 557 randomly selected adults, 284 said that they were underpaid. Construct a 95% confidence interval estimate for the proportion of adults who say they are underpaid.\r<BR>\n" );
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document.write( "Mean    Proportion<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #671951 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=671951\">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 underpaid. Construct a 95% confidence interval estimate for the proportion of adults who say they are underpaid. <BR>\n" );
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document.write( "p-hat = 284/557 = 0.51<BR>\n" );
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document.write( "ME = z*sqrt(p*q/n) = 1.96*sqrt[0.51*0.49/557] = 0.04<BR>\n" );
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document.write( "95% CI:: 0.51 - 0.04 < p < 0.51+0.04<BR>\n" );
document.write( "95% CI:: 0.47 < p < 0.54<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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