document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=238363>Question 238363</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a student takes a 20 question multiple choice exam with 5 choices for each question and guesses on each question.  find the probability of guessing at least 15 out of the 20 correctly.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #175153 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=175153\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a student takes a 20 question multiple choice exam with 5 choices for each question and guesses on each question. find the probability of guessing at least 15 out of the 20 correctly. <BR>\n" );
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document.write( "It is a binomial problem with n=20, p=1/5 ; 15<= x <=20<BR>\n" );
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document.write( "Prob = 1 - binomcdf(20,1/5,14) = 0.0000001803<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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