document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1086125>Question 1086125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A multiple choice quiz consists of 50 questions, each with 4 possible answers. Find the mean for the number of correct answers, if a student guesses on each question. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #700279 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=700279\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> E(X), the expected value (mean) is x*p(x)<BR>\n" );
document.write( "This is 50*0.25, the probability of guessing one correctly.<BR>\n" );
document.write( "That would be 12.5 </SPAN>\n" );
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