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help me please with this consider the following function: P1. B f(cy) = 115x,y (a) Find B so that f (x y) represents a joint

help me please with this

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consider the following function: P1. B f(cy) = 115x,y (a) Find B so that f (x y) represents a joint density function of the random variables X and Y (b) calculate the marginal densities of X and Y (c) calculate the expectation of X" and the expectation of Y. find the probability of P(X

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