The Joint Probability distribution of variables X and Y is shown in the table below. Amber and Bianca are real estate agents. Let X denote the number of houses that Amber will sell in a month, and Let Y denote the number of houses Bianca will sell in a month.
X
Y 1 2 3
1 0.30 0.18 0.12
2 0.15 0.09 0.06
3 0.05 0.03 0.02
(Real Estate Narrative) Determine the marginal probability distribution of X.
Calculate E(X) and E(Y).