document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=619296>Question 619296</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If 11 coins are tossed what is the probability of getting EXACTLY 2 heads? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #389561 by </B><A HREF=/tutors/aboutme.mpl?userid=sophxmai><B>sophxmai(62)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sophxmai><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=sophxmai><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=389561\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If 11 coins are tossed what is the probability of getting EXACTLY 2 heads?<BR>\n" );
document.write( "Use P(x=k)=nCk*p^k*q^(n-k)<BR>\n" );
document.write( "Where p=probability of success and q=1-p, probability of failure\r<BR>\n" );
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document.write( "So<BR>\n" );
document.write( "P(x=2)=(11C2)(1/2)^2(1/2)^(11-2)<BR>\n" );
document.write( "=(11C2)(1/4)(1/512)<BR>\n" );
document.write( "=(11C2)(1/2048)<BR>\n" );
document.write( "=0.0269 </SPAN>\n" );
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