A restaurant sells three sizes of shakes. The small, medium and large sizes each cost \$2. 00$2. 00dollar sign, 2, point, 00, \$3. 00$3. 00dollar sign, 3, point, 00, and \$3. 50$3. 50dollar sign, 3, point, 50 respectively. Let xxx represent the restaurant's income on a randomly selected shake purchase. Based on previous data, here's the probability distribution of xxx along with summary statistics:.