document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1135130>Question 1135130</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rework problem 28 from section 3.4 of your text, involving the drawing of two balls from a box of colored balls. Assume the box contains 10 balls: 5 red, 3 blue, and 2 yellow. A ball is drawn and its color noted. If the ball is yellow, it is replaced; otherwise, it is not. A second ball is then drawn and its color is noted.<BR>\n" );
document.write( "What is the probability that the first ball was yellow, given that the second was red? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #752675 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=752675\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One can make a tree diagram and determine that <BR>\n" );
document.write( "RR is 2/9<BR>\n" );
document.write( "RB is 1.5/9<BR>\n" );
document.write( "RY is 1/9<BR>\n" );
document.write( "BR is 1.5/9<BR>\n" );
document.write( "BB is .6/9<BR>\n" );
document.write( "BY is .6/9<BR>\n" );
document.write( "YR is 1/10<BR>\n" );
document.write( "YB is 6/100<BR>\n" );
document.write( "YY is 4/100<BR>\n" );
document.write( "Those do add to 1.00<BR>\n" );
document.write( "So, if the second is red 10/100+15/90+20/90 or 35/90 + 10/100 or 440/900,<BR>\n" );
document.write( "the first one was yellow is 10/100 or 90/900<BR>\n" );
document.write( "The answer is 90/440 or 0.2045<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );