document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=549977>Question 549977</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A exam has 20 multiple choice questions( each had four choices: a,b,c,d) and 10 true false questions. Suppose a student used random guessing and all questions are answered. Assuming each multiple choice questions is worth 2 points and true false worth 1 point. What is the expected value and the variance of the exam score? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358343 by </B><A HREF=/tutors/aboutme.mpl?userid=nasa><B>nasa(3)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nasa><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=358343\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> well first your grade makes a difference to this answer but the test is worth 50 points.<BR>\n" );
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