Question: Let X denote the number on a chip drawn at random from an urn containing three chips, numbered 1, 2, and 3. Let Y be

Let X denote the number on a chip drawn at random from an urn containing three chips, numbered 1, 2, and 3. Let Y be the number of heads that occur when a fair coin is tossed X times.
(a) Find pX,Y(x, y).
(b) Find the marginal pdf of Y by summing out the x values.

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