document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=272486>Question 272486</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Paul takes a 20 question true false test and randomly guesses at each answer what is the probability of his passing the quiz if it takes at least 12 correct answers </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #199321 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=199321\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Paul takes a 20 question true false test and randomly guesses at each answer what is the probability of his passing the quiz if it takes at least 12 correct answers<BR>\n" );
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document.write( "Binomial: n = 20 ; p = 0.5 <BR>\n" );
document.write( "P(12 <= x <= 20) = 1-binomcdf(20,0.5,11) = 0.2517<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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