document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=930582>Question 930582</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that the probability of parents having a child with blond hair is 1/4.  If there are 6 children in the family, what is the probability that half of them will have blond hair?  What is expected value, or mean, and standard deviation for this distribution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #565113 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=565113\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(blond) = .25,  n = 6<BR>\n" );
document.write( "...<BR>\n" );
document.write( "P(x = 3) = binompdf(6, .25, 3) = .1318  0r 13.18%<BR>\n" );
document.write( "......<BR>\n" );
document.write( "mean = .25(6) = 1.5<BR>\n" );
document.write( "sd = sqrt(.25*.75*6) = 1.0607 </SPAN>\n" );
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