document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=241336>Question 241336</A>: <I><SPAN STYLE=\"word-break: break-all;\"> From 4 cards bearing the numbers -2, -1, 0, 1, one card will be drawn at random. Let X be the square of the number on the card. Find the expectaion of X.  I have worked on this for hours but never seem to come up with a an answer that matches any of these: a 1, c 2 c 1.75 or d 1.5.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #176764 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=176764\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> From 4 cards bearing the numbers -2, -1, 0, 1, one card will be drawn at random. Let X be the square of the number on the card. Find the expectaion of X. I have worked on this for hours but never seem to come up with a an answer that matches any of these: a 1, c 2 c 1.75 or d 1.5. <BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Values of \"X\": 4, 1, 0, 1<BR>\n" );
document.write( "Probability for each is (1/4)<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Expected value of X: (1/4)(4+1+0+1) = 6/4 = 3/2 = 1.5<BR>\n" );
document.write( "===========================================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );