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Let the random variable X have a chi-squared distribution with degrees of freedom r. Let Y = X4. Find the p.d.f. of Y . Suppose

Let the random variable X have a chi-squared distribution with degrees of freedom r. Let Y = X4. Find the p.d.f. of Y . Suppose that the random variables X, and X, have joint probability density function h(X1, X2) = 9X1X2, -X2

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