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[10 pts] Two service lines are operated in a service facility. On a randomly selected day, let X be the proportion of the time that

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[10 pts] Two service lines are operated in a service facility. On a randomly selected day, let X be the proportion of the time that the first line is in use whereas Y is the proportion of time that the second line is in use. Suppose that the joint probability density function for (X, Y) is f(x, y) = 10, [ 2(203 + 93 ) , 0

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