document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=657243>Question 657243</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A family has 4 children. Using a tree diagram that shows how many ways the children could have been born, from first to last born, determine how many ways the family could have had 2 boys and 2 girls. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #409942 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=409942\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A family has 4 children. Using a tree diagram that shows how many ways the children could have been born, from first to last born, determine how many ways the family could have had 2 boys and 2 girls.<BR>\n" );
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document.write( "Binomial Problem with n = 4 and p(boy) = P(girl) = 1/2<BR>\n" );
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document.write( "P(x = 2 girls) = 4C2(1/2)^2*(1/2)^2 = 6/16 = 3/8<BR>\n" );
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document.write( "Note: If there are 2 girls in a family of 4, the other 2 children must be boys.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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