document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=443602>Question 443602</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man claims to have extrasensory perception. As a test, a fair coin is flipped 22 times, and the man is asked to predict the outcome in advance. He gets 18 out of 22 correct. What is the probability that he would have done at least this well if he had no ESP?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #305927 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=305927\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r=.5 and w=.5 [for right and wrong guesses]<BR>\n" );
document.write( "r^22+22r^21w+231r^20w^2+1540r^19w^3+7315r^18w^4=.002172 [from the partial expansion of the binomial (r+w)^22]<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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