Don and Peggy are advertising executives with unhealthy drinking habits. Let X be the number of drinks Don consumes and Y be the number of drinks Peggy consumes in a given day. The joint distribution of X and Y is given by the table below. X 4 5 Y 6 7 8 0 .05 .05 .15 .05 0 .1 .1 05 .05 .1 2 05 .05 05 .1 05 a. Find E(X) and E(Y). (4pt) b. If each of Don's drinks are 2oz., what is the standard deviation of Don's consumption measured in ounces? (4pt) c. On average, how many more drinks does Don consume than Peggy? (2pt)