A woman who smokes during pregnancy increases health risks to the infant so that it is nown that about 20% of female smokers quit smoking during pregnancy. Suppose that a andom sample of 400 pregnant women who smoked prior to pregnancy contained 62 who uit smoking during pregnancy. . What is the point estimate for p, the population proportion of female smokers who quit moking during pregnancy.

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A woman who smokes during pregnancy increases health risks to the infant so that it is
known that about 20% of female smokers quit smoking during pregnancy. Suppose that a
random sample of 400 pregnant women who smoked prior to pregnancy contained 62 who
quit smoking during pregnancy.
a. What is the point estimate for p, the population proportion of female smokers who quit
smoking during pregnancy.
Transcribed Image Text:A woman who smokes during pregnancy increases health risks to the infant so that it is known that about 20% of female smokers quit smoking during pregnancy. Suppose that a random sample of 400 pregnant women who smoked prior to pregnancy contained 62 who quit smoking during pregnancy. a. What is the point estimate for p, the population proportion of female smokers who quit smoking during pregnancy.
b. What are the assumptions?
c. Compute the 97% Confidence interval for p.
d. Interpret the confidence interval you found in c.
e. Does the result in part c agree with the claim 'about 20% of female smokers quit smoking
during pregnancy'? Explain why?
Transcribed Image Text:b. What are the assumptions? c. Compute the 97% Confidence interval for p. d. Interpret the confidence interval you found in c. e. Does the result in part c agree with the claim 'about 20% of female smokers quit smoking during pregnancy'? Explain why?
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