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Let the joint probability mass function of two discrete random variables X, Y be f (x, y) = 30 > * = 1, 2,3 and

Let the joint probability mass function of two discrete random variables X, Y be f (x, y) = 30 > * = 1, 2,3 and y = 1, 2. Compute E X + Y]. O 1 O 27/15 63/15 35/15 62/15

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