Suppose that X and Y have a discrete joint distribution for which the probability distribution is defined
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Question:
Suppose that X and Y have a discrete joint distribution for which the probability distribution is defined as follows: P(x,y) = c |x + y| for x = -2, -1, 0, 1, 2 and y = -2, -1, 0, 1, 2; = 0 otherwise.
(a) Determine the value of the constant c.
(b) Compute P(X = 0 and Y = −2)
(c) Compute P(X=1)
(d) Compute P(|X − Y | ≤ 1)
(e) Compute the conditional probability distribution, P(Y |X = 1).
(f) Obtain the conditional mean of Y given X = 1, that is, E(Y |X = 1)
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