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A circular spinner is divided into 4 regions and the regions are colored blue, red,...

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Basic Math

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A circular spinner is divided into 4 regions and the regions are colored blue, red, yellow, and green. Each region occupies a fourth of the circle.Suppose you decide to play a "game" with your friend. If he spins and it lands on green, you will give him $5. If he spins and it lands on any other color, he has to give you $3.What is the mathematical expectation for this game? Should your friend play with you?Your friend should play because on average he will win $1 each time he plays.Your friend should NOT play because on average he will lose $4 each time he plays.Your friend should NOT play because on average he will lose $1 each time he plays.I have no idea. When did we ever learn this?

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