Question: III. (4 points - 2 points each) When a poll calls residential telephone numbers at random, only 20% of the calls reach a live person.

III. (4 points - 2 points each) When a poll calls residential telephone numbers at random, only 20% of the calls reach a live person. Suppose that 8 calls are made randomly. (a) What is the probability that at most 2 calls reach a live person? (6) What is the probability that at least 2 calls reach a live person

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