document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1156413>Question 1156413</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A certain disease has an incidence rate of 0.9%. If the false negative rate is 5% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the disease.<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 #779096 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=779096\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Look at 10000 people<BR>\n" );
document.write( "expect 9 to have the disease. False + is T+ D-, True negative rate is 95% \r<BR>\n" );
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document.write( "              T+.         T-        Total<BR>\n" );
document.write( "D+         88.2       1.8.          90<BR>\n" );
document.write( "D-          495.5    9414.5   9910<BR>\n" );
document.write( "             583.7.     9416.3 10000\r<BR>\n" );
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document.write( "Person who tests positive has the disease with probability 88.2/583.7=15.11% </SPAN>\n" );
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