document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1154597>Question 1154597</A>: <I><SPAN STYLE=\"word-break: break-all;\"> suppose that e and f are two events and that p(e)=0.2 and p(f|e)=0.4. what is p(e and f)?\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 #777075 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=777075\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(f given e) = p(e and f) / p(e)<BR>\n" );
document.write( "p(f given e) = .4<BR>\n" );
document.write( "p(e) = .2<BR>\n" );
document.write( "p(f given e) = p(e and f) / p(e) becomes:<BR>\n" );
document.write( ".4 = p(e and f) / .2<BR>\n" );
document.write( "solve for p(e and f) to get:<BR>\n" );
document.write( "p(e and f) = .2 * .4 = .08<BR>\n" );
document.write( "that should be your solution.\r<BR>\n" );
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