document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1128569>Question 1128569</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the probability of (B|A) if P(A) =.50; P(B) =.80; P(AnB) =.20; P(B|A) =.40 P(AuB) =.90 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #745069 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=745069\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "The given probabilities are not possible.<br><BR>\n" );
document.write( "P(AuB) = P(A)+P(B)-P(AnB)<br><BR>\n" );
document.write( "With the given probabilities, that is .50+.80=.20 = 1.10.  But a probability can't be greater than 1.<br><BR>\n" );
document.write( "Re-post the problem with the right numbers. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );