document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1151438>Question 1151438</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A diagnostic test for a certain disease is said to be 90% accurate in that,<BR>\n" );
document.write( "if a person has the disease, the test will detect with probability 0.9. Also, if<BR>\n" );
document.write( "a person does not have the disease, the test will report that he or she doesn’t<BR>\n" );
document.write( "have it with probability 0.9. Only 1% of the population has the disease in<BR>\n" );
document.write( "question. If the diagnostic test reports that a person chosen at random from<BR>\n" );
document.write( "the population has the disease, what is the conditional probability that the<BR>\n" );
document.write( "person, in fact, has the disease? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #773225 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=773225\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Look at 10000 people<BR>\n" );
document.write( "100 have the disease\r<BR>\n" );
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document.write( "---   D+           D-  Total<BR>\n" );
document.write( "T+   90         990    1080     \r<BR>\n" );
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document.write( "T-   10        8910    8920\r<BR>\n" );
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document.write( "Total 100      9900   10000\r<BR>\n" );
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document.write( "If the test is positive, the probability of having the disease is 90/1080 or 8.3% </SPAN>\n" );
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