Posted: March 12th, 2023

- Suppose we have a frequency function for two variables X and Y,
- , for x = 0, 1, 2, 3 and y = 0, 1, 2.
- Determine the marginal distributions of X and Y.
- Determine E(X) and E(Y).
- Determine E(X + Y).
- If Z = 2X + 10, determine E(Z).
- Determine E(XY).
- Determine cov(X,Y).
- Are X and Y independent? Justify your answer.

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