document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1043431>Question 1043431</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a survey of 8000 &#8203;women, 5431 say they change their nail polish once a week. Construct a 99% confidence interval for the population proportion of women who change their nail polish once a week.\r<BR>\n" );
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document.write( "A 99% confidence interval for the population proportion is? Round to three decimal places as&#8203; needed </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #658597 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=658597\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a survey of 8000 &#8203;women, 5431 say they change their nail polish once a week. Construct a 99% confidence interval for the population proportion of women who change their nail polish once a week. <BR>\n" );
document.write( "A 99% confidence interval for the population proportion is? Round to three decimal places as&#8203; needed <BR>\n" );
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document.write( "p-hat = 5431/8000 = 0.679<BR>\n" );
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document.write( "ME = 2.5758*sqrt[0.679*0.321/8000] = 0.013<BR>\n" );
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document.write( "99%CI:: 0.679-0.013 < p < 0.679+0.013<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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