A joint density function is given by (a) Find the value of the constant k. k= (b) Find the probability that (x, y) satisfies x + y ≤ 3. probability = (c) Find the probability that (x, y) satisfies x ≤ 1.5 and y ≤ 1. probability = f(x, y) = = Skx³ for 0≤x≤ 3 and 0 ≤ y ≤ 2, otherwise.

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