62% of all Americans live in cities with population greater than 100,000 people. If 36 Americans are randomly selected, find the probability that a. Exactly 20 of them live in cities with population greater than 100,000 people. b. At most 25 of them live in cities with population greater than 100,000 people. c. At least 22 of them live in cities with population greater than 100,000 people. d. Between 21 and 25 (including 21 and 25) of them live in cities with population greater than 100,000 people