document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=477740>Question 477740</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in a multiple choice test each question has four options. students will get 5 points for each correct answer; lose 1 point for each incorrect answer; and recieve no points for unanswered questions. A student does not know the correct answer for one question. Is it to her advantage or disadvantage to guess an answer? Show calculations for expected value. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #327446 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=327446\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> in a multiple choice test each question has four options. students will get 5 points for each correct answer; lose 1 point for each incorrect answer; and recieve no points for unanswered questions. A student does not know the correct answer for one question. Is it to her advantage or disadvantage to guess an answer? Show calculations for expected value.<BR>\n" );
document.write( "----------\r<BR>\n" );
document.write( "\n" );
document.write( "E(points) = (1/4)5 + (3/4)(-1) = (5/4) - (3/4) = 1/2 <BR>\n" );
document.write( "--<BR>\n" );
document.write( "Expect to gain 1/2 point on each question answered.<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );