document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=477883>Question 477883</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Of 15 windup toys on a sale table, 4 are defective. If 2 toys are selected at random, find the expected number of defective toys.\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 #327452 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=327452\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Of 15 windup toys on a sale table, 4 are defective. If 2 toys are selected at random, find the expected number of defective toys. <BR>\n" );
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document.write( "Random number of defective toys: 0:::::::::1:::::::::::::::::2<BR>\n" );
document.write( "Corresponding Probabilities::(11/15)^2::2*(4/15)(11/15)::(4/15)^2<BR>\n" );
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document.write( "E(x) = 0 + 1[2(44/225)] + 2[16/225] = (88+32)/225 = 120/225 = 24/45<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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