Three balls are selected simultaneously and randomly from a box. Assume that the box contains 4 red balls and 5 green balls. Also assume that each red ball selected pays $0.30, that each green ball selected pays $0.70, and that it costs $1.40 to play the game. A random variable X is defined to be the net payoff for a player. How many different values are possible for the random variable X?
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total balls = 4+5=9
cost of red ball each = $0.30
cost of green ball each = $0.70
and that cost $1.40 to play the game.
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