document.write( "Question 1120185: 26
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document.write( "In an urn I have 20 marbles: 2 red, 3 yellow, 4 blue, 5 green, and 6 black marbles. The selection of one marble is random. The winning table is below. What is the expected value of winnings?
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document.write( "Color Red Yellow Blue Green Black
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document.write( " Amount won $10 $5 $2 $1 $0
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Algebra.Com's Answer #735861 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Expected value is the sum the products for each color of the probability of getting that color and the payout for that color. \n" ); document.write( "(2/20)*$10 + (3/20)*$5 + (4/20)*$2 + (5/20)*$1 + (6/20)*$0 = (20+15+8+5+0)/20 = 48/20 = $2.40. \n" ); document.write( " |