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Let X and Y denote random variables denoting the proportion of contaminants of type A and the proportion of contaminants of type B present in

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Let X and Y denote random variables denoting the proportion of contaminants of type A and the proportion of contaminants of type B present in a landfill, respectively. A student calculated the conditional density function f(ylx) = 2(x+ y) Oxysx, 3x2 and the marginal density function f(x) = 3x, 0 0.8)? Why or why not

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