document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428017>Question 428017</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ziggy and Samantha  are  planning to have four children. If the probability of a girl is 0.51, what is the probability they will have at least 2 girls or exactly one boy </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #297642 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=297642\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Ziggy and Samantha are planning to have four children. If the probability of a girl is 0.51, what is the probability they will have at least 2 girls or exactly one boy<BR>\n" );
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document.write( "P(g>=2 of 4) = 1- binomcdf(4,0.51,1) = 1 - 0.2977 = 0.7023<BR>\n" );
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document.write( "P(b = 1) = 4C1(0.49)*(0.51)^3 = 0.2600<BR>\n" );
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document.write( "P(g>=2 OR b=1) = P(g>=2)+P(b=1)<BR>\n" );
document.write( "= 0.7023+0.2600 <BR>\n" );
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document.write( "= 0.9623<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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