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030702princessjs
030702princessjs
27.03.2020 • 
Mathematics

Prompt Recall the use of data from the National Health Survey to estimate behaviors such as alcohol consumption, cigarette smoking, and hours of sleep for all U.S. adults. In the 2005-2007 report, they estimated that 30% of all current smokers started smoking before the age of 16. Suppose that we randomly select 100 U.S. adults who are smokers and find that 25% of this sample started smoking before the age of 16. Is this much error surprising? 1. Assuming the report is correct that 30% of smokers started before 16, what is the probability that 25% or less of the above sample of 100 adults started smoking before 16? 2. Assuming the report is correct that 30% of smokers started before 16, what is the probability that 35% or more of the above sample of 100 adults started smoking before 16?

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