document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1049743>Question 1049743</A>: <I><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
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document.write( "Please help me solve this Expected Value\"\r<BR>\n" );
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document.write( "A bag contains 1 gold marbles, 10 silver marbles, and 29 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1.\r<BR>\n" );
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document.write( "What is your expected value if you play this game? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #665300 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=665300\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A bag contains 1 gold marbles, 10 silver marbles, and 29 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1. <BR>\n" );
document.write( "What is your expected value if you play this game? <BR>\n" );
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document.write( "Random \"winnings\"::............. 4.......2......-1<BR>\n" );
document.write( "Corresponding probabilities::....1/40..10/40....29<BR>\n" );
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document.write( "Expected \"winnings\":: (4 + 20 - 29)/40 = -5/40 = -($(1/8) = -12.5 cents<BR>\n" );
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document.write( "Cheers<BR>\n" );
document.write( "Stan H.<BR>\n" );
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