document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=763999>Question 763999</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a survey of 9000 women, 6431 sy they change their nail polish once a week. Construct a 95% 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( "9000/6431=1.4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #465167 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=465167\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a survey of 9000 women, 6431 sy they change their nail polish once a week. Construct a 95% confidence interval for the population proportion of women who change their nail polish once a week <BR>\n" );
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document.write( "sample proportin = p-hat = 6431/9000 = 0.71<BR>\n" );
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document.write( "ME = 1.96*sqrt[0.71*0.29/9000] = 0.0094<BR>\n" );
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document.write( "95% CI: 0.71-0.0094 < p < 0.71+0.0094<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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