document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1047567>Question 1047567</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that HIV test gives a positive result with probability 96% when the patient is indeed affected by HIV, while it gives a negative result with 97% probability when the patient is not affected by HIV. If a patient is drawn at random from a population in which 12% of individuals are affected by HIV and s/he is found negative, what is the probability that s/he is indeed not affected by HIV? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #663080 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=663080\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ======Test+-------Test-=======Total<BR>\n" );
document.write( "HIV +===1152=====48========1200<BR>\n" );
document.write( "HIV-====264=====8536=======8800<BR>\n" );
document.write( "Total====1416=====8584=========10000\r<BR>\n" );
document.write( "\n" );
document.write( "If the patient test negative, the probability the person truly is negative is 8536/8584=99.4% </SPAN>\n" );
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