Question: how do I solve these 3 Let X be an exponential random vriable with A - 5 and Y be a uniformly distributed random vrinble

how do I solve these 3

Let X be an exponential random vriable with A - 5 and Y be a uniformly distributed random vrinble on (-3, X). What is EY? Suppose that X and Y have joint probability density function given by: / (3, p) = 2 for Dex land OK yr. What is Cop(X Y)? If the joint density function of X and Y is given by f(x,y) - May for D * s * 1, Ocgcl -x, what is EXT

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