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Help me finish my statistics homework

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>An archer can hit the bullseye of a target with a probability of 1/3. She shoots until she hits the bullseye, or until she's taken four shots. The number of shots is observed. Determine the probability distribution for this experiment.
>In a carnival game, a player pays $1 to toss a coin until until either he gets heads or has tossed it four times. He receives fifty cents for each toss. Determine the probability distribution for the experiment of playing the game and observing the player's earnings.