document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=94936>Question 94936</A>: <I><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "One urn contains 3 red and 7 white marbles.  A second urn contains 2 red and 8 white marbles.  One urn is selected and a ball drawn.  The probability of selecting the first urn is 0.4 and the probability of selecting the second is 0.6.  If a white ball is drawn, find the probability it came from the second urn.\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 #69109 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=69109\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Urn#1 .4*.7=.28<BR>\n" );
document.write( "Urn#2 .6*.8=.48<BR>\n" );
document.write( ".28+.48=.76<BR>\n" );
document.write( "Notice that the probabilities don't add up to 1.00<BR>\n" );
document.write( "That's because we have excluded the possibility of getting a red ball from either of the urns. (the missing .24)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.48%2F.76=12%2F19 ALIGN=MIDDLE  ALT=\".48%2F.76=12%2F19\"   DISABLED_style= \"max-width:90%; height:auto;\" >probability the ball came from urn#2<BR>\n" );
document.write( "EdJones </SPAN>\n" );
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