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According to an almanc, 60% of adult smokers started smoking before turning 18 years of age....

According to an almanc, 60% of adult smokers started smoking before turning 18 years of age. a. If 200 adult smokers are randomly selected, how many would we expect to have started smoking before turning 18 years old? b. Would it be unusual tp observe 170 smokers who started smoking before turning 18 years old in a random sample of 200 adult smokers? Why?

math   Statistics-And-Probability   
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