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Suppose X and Y are random variables with the given joint density function. f(x, y) = 0.le (0.5x + 0.2y) ifx 20, y 20 0

Suppose X and Y are random variables with the given joint density function. f(x, y) = 0.le (0.5x + 0.2y) ifx 20, y 20 0 otherwise (a) Is f a joint density function? O Yes O No (b) Find P(Y > 5). (Round your answer to four decimal places.) Find P(X

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