According to the National Center for Health Statistics (2004), 22.4% of adults are smokers. A random sample
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According to the National Center for Health Statistics (2004), 22.4% of adults are smokers. A random sample of 300 adults is obtained.
(a) Describe the sampling distribution of , the sample proportion of adults who smoke.
(b) In a random sample of 300 adults, what is the probability that at least 50 are smokers?
(c) Would it be unusual if a random sample of 300 adults results in 18% or less being smokers?
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a Our sample size n 300 is less than 5 of the population size ...View the full answer
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