document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=281709>Question 281709</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A student takes a 20-question, multiple choice exam with five choices for each question and guesses on each question.  Assuming for each question only one of the five choices is correct, what is the mean number of questions the student could get correct by guessing? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #204691 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=204691\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A student takes a 20-question, multiple choice exam with five choices for each question and guesses on each question. Assuming for each question only one of the five choices is correct, what is the mean number of questions the student could get correct by guessing?<BR>\n" );
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document.write( "Binomial Problem:<BR>\n" );
document.write( "n = 20 ; p = 1/5<BR>\n" );
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document.write( "mean = np = (1/5)20 = 4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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