document.write( "Question 1205001: 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 $3. If it is silver, you win $2. If it is black, you lose $1.\r
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Algebra.Com's Answer #841590 by ikleyn(52914) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "A bag contains 1 gold marbles, 10 silver marbles, and 29 black marbles. Someone offers
\n" ); document.write( "to play this game: You randomly select one marble from the bag.
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\n" ); document.write( "What is your expected value if you play this game?
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document.write( "In total, there are 1 + 10 + 29 = 40 marbles.\r\n" );
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document.write( "mathematical expectation =  =  =  =  = -0.15 of a dollar, or -15 cents.\r\n" );
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document.write( "If you play this game many times, you will lose about 15 cents per game, in average.\r\n" );
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