Almanac, 80% of adult smokers started smoking before they were 18 years old. Suppose 100 smokers 18
Question:
(a) approximate the probability that exactly 80 of them started smoking before they were 18 years old.
(b) approximate the probability that at least 80 of them started smoking before they were 18 years old.
(c) approximate the probability that fewer than 70 of them started smoking before they were 18 years old.
(d) approximate the probability that between 70 and 90 of them, inclusive, started smoking before they were 18 years old.
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From the parameters n 100 and p 08 we get X np 10008 ...View the full answer
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