document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163030>Question 1163030</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a recent poll of 1,600 homeowners in the United States, one in eight homeowners reports having a home equity loan that he or she is currently paying off. Using a confidence coefficient of 0.99, derive the interval estimate for the proportion of all homeowners in the United States that hold a home equity loan. (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal places. Round \"z\" value and final answers to 3 decimal places.)  \r<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 #787078 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=787078\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> CI interval is z(0.995)*sqrt(p*1-p)/n), where p=0.125 and 1-p=0.875, n is 1600<BR>\n" );
document.write( "z=2.576<BR>\n" );
document.write( "the interval is 0.0213 on either side of the point estimate, which is 0.125<BR>\n" );
document.write( "(0.1037, 1463)\r<BR>\n" );
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