document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=62858>Question 62858</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A family has five children. The probablilty of having a girl is 1/2. What is the probability of having no more than 3 boys? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #43671 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=43671\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A family has five children. The probablilty of having a girl is 1/2. What is the probability of having no more than 3 boys?<BR>\n" );
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document.write( "P(0<=X<=3)= binomcdf(5,.5,3)=0.81<BR>\n" );
document.write( "This from using a TI-83<BR>\n" );
document.write( "another way is 1-[P(X=4)+P(X=5)]<BR>\n" );
document.write( "P(x=4)=5C4(1/2)^5<BR>\n" );
document.write( "P(x=5)=1/32<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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