document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207919>Question 207919</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a biased coin has 1 in 10 chance of landing heads.  If tossed 400 times, what is the estimated chance of getting exactly 40 heads? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157283 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=157283\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a biased coin has 1 in 10 chance of landing heads. If tossed 400 times, what is the estimated chance of getting exactly 40 heads?<BR>\n" );
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document.write( "It's binomial with n=400, p = 0.1, x = 40.<BR>\n" );
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document.write( "P(x+40) = 400C40(0.1)^40*(0.9)^360 = 0.0664<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "stan H. </SPAN>\n" );
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