Question: 4.5. Let X and Y be jointly distributed random variables whose joint probability mass function is given in the following table: Show that the covariance

4.5. Let X and Y be jointly distributed random variables whose joint probability mass function is given in the following table:

x * -1 0 0 1 y -1 0 1 0 41

Show that the covariance between X and Y is zero even though X and Y are not independent.

x * -1 0 0 1 y -1 0 1 0 41 6171819 0 913 210 0 = p(x, y) Pr{Xx, Y = y}

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