10% of all Americans live in poverty. If 40 Americans are randomly selected, find the following probabilities. Round answers to 4 decimal places. a. Probability that exactly 5 of them live in poverty. b. Probability that at most 4 of them live in poverty. c. Probability that at least 2 of them live in poverty. d. Probability that between 3 and 9 (including 3 and 9) of them live in poverty.