According to a Gallup poll 27% of American adults have

According to a Gallup poll 27% of American adults have confidence in banks. Suppose that you interview 5 Americans adults at random.

a. What is the probability that 2 or fewer have confidence in banks?

b. What is the probability that no one had confidence in banks?

c. What is the probability that 3 or more have confidence in banks?



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