document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=363712>Question 363712</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A student takes an exam containing 16 true or false questions. If a student randomly guesses on the entire exam, what is the expected value of the number of correct answers? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #259377 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=259377\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a binomial experiment with n = 16 and p = 0.5.  Thus <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu+=+np+=+16%2A0.5+=+8 ALIGN=MIDDLE  ALT=\"mu+=+np+=+16%2A0.5+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Therefore he can expect to get 8 correct answers just by guessing. </SPAN>\n" );
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