document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=867204>Question 867204</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the probability that a couple will have at least three sons if they plan to have 4 children and if the probability of having a son equals the probability of having a daughter?<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 #522840 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=522840\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(son) = 1/2 , n =4<BR>\n" );
document.write( "P(x &#8805; 3) = 1 - binomcdf(4, .5, 2) = .3125 </SPAN>\n" );
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