document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=520912>Question 520912</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On a multiple choice quiz with 24 questions, each has 5 possible answers, find the variance of the number of correct answers.\r<BR>\n" );
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document.write( "Please help me set this up with the numbers provided.  Not just the formula, it's the formula that is confusing me!\r<BR>\n" );
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document.write( "Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346282 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=346282\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  On a multiple choice quiz with 24 questions, each has 5 possible answers, find the variance of the number of correct answers. <BR>\n" );
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document.write( "Binomial Problem with n = 24 and p(correct) = 1/5<BR>\n" );
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document.write( "variance = sqrt(npq) = sqrt(24*1/5*4/5) = (4/5)sqrt(6)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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