document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=525062>Question 525062</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Flip a fair coin 4 times. What is the probability of observong exactly three heads?<BR>\n" );
document.write( "*Should I use binomial distribution or HHH method? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #348021 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=348021\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Flip a fair coin 4 times. What is the probability of observong exactly three heads?<BR>\n" );
document.write( "*Should I use binomial distribution or HHH method?<BR>\n" );
document.write( "Yes<BR>\n" );
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document.write( "Binomial Problems with n = 4 ; p(H) = 1/2<BR>\n" );
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document.write( "P(x = 3) = 4C3(1/2)^3*(1/2) = 4*(1/2)4 = 4/16 = 1/4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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