document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=126963>Question 126963</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need to know if my answer is correct on this one. I constructed a diagram and listed the sample space as 8.  I found the probability to be 1/4.  Thanks.\r<BR>\n" );
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document.write( "A couple plan to have exactly three children. <BR>\n" );
document.write( "(a) Construct a tree diagram and list the sample space.<BR>\n" );
document.write( "(b) Find the probability that the family has at least two girls.<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 #93034 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=93034\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A couple plan to have exactly three children. <BR>\n" );
document.write( "(a) Construct a tree diagram and list the sample space.<BR>\n" );
document.write( "Yes, there are 8 possible patterns.<BR>\n" );
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document.write( "(b) Find the probability that the family has at least two girls.<BR>\n" );
document.write( "P(at least two girls) = P(2 girls) + P(3 girls) = (3/8)+(1/8) = 4/8 = 1/2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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