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I need help with this. Please... With solution so that I can use it as reviewer. Thank you. Suppose that a continuous random variable X

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I need help with this. Please... With solution so that I can use it as reviewer. Thank you.

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Suppose that a continuous random variable X has a probability density function given by if x50 2x f ( x, y) = if 0 R Find the variance of X.Find the following probabilities if the joint probability density function of X and Y is given g! _ 261623\" if0 1, Y 1)

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