According to another almanac, 60% of adult smokers started smoking before turning 18 years old. (a) If

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According to another almanac, 60% of adult smokers started smoking before turning 18 years old.

(a) If 300 adult smokers are randomly selected, how many would we expect to have started smoking before turning 18 years old?

(b) Would it be unusual to observe 270 smokers who started smoking before turning 18 years old in a random sample of 300 adult smokers? Why?

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