Data in 1980 showed that about 42% of one country's population had never smoked cigarettes.In 2004,a national health survey in this country interviewed a random sample of 3000 adults and found that 51% had never been smokers.Create a 95% confidence interval for the proportion in 2004 of this country's adults who had never been smokers.
A) Based on the data,we are 95% confident the proportion of adults in 2004 who had never smoked cigarettes is between 49.2% and 52.8%.
B) Based on the data,we are 95% confident the proportion of adults in 2004 who had never smoked cigarettes is between 47.8% and 58.2%.
C) Based on the data,we are 95% confident the proportion of adults in 2004 who had never smoked cigarettes is between 49.2% and 63.2%.
D) Based on the data,we are 95% confident the proportion of adults in 2004 who had never smoked cigarettes is between 40% and 60%.
E) Based on the data,we are 95% confident the proportion of adults in 2004 who had never smoked cigarettes is between 37.4% and 52.8%.
Correct Answer:
Verified
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