The Joint Probability Distribution of X and Y Is Shown $\quad$

Essay

The joint probability distribution of X and Y is shown in the following table. $\quad$ $\quad$ $\quad$ $\quad$$X$
$\begin{array}{c|ccc}Y & 1 & 2 & 3 \\\hline 1 & .30 & .18 & .12 \\2 & .15 & .09 & .06 \\3 & .05 & .03 & .02\end{array}$
a. Determine the marginal probability distributions of X and Y.
b. Are X and Y independent? Explain.
c. Find P(Y = 2 | X = 1).
d. Find the probability distribution of the random variable X + Y.
e. Find E(XY).
f. Find COV(X, Y).