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The random variables X and Y have the following joint probability mass function: -1 0 0 1 y 0 -1 1 0 fxy (x, y)

The random variables X and Y have the following joint probability mass function: -1 0 0 1 y 0 -1 1 0 fxy (x, y) 1/4 1/4 1/4 1/4 Show that the correlation coefficient between X and Y is zero, but X and Y are not independent

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