78% of all Americans live in cities with population greater than 100,000 people. If 33 Americans are randomly selected, find the probability that a. Exactly 24 of them live in cities with population greater than 100,000 people. b. At most 27 of them live in cities with population greater than 100,000 people. c. At least 27 of them live in cities with population greater than 100,000 people. d. Between 22 and 29 (including 22 and 29) of them live in cities with population greater than 100,000 people.