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.

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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Description: A woman who smokes during pregnancy increases health risks to the infant so that it isknown that about 20% of female smokers quit smoking during pregnancy. Suppose that arandom sample of 400 pregnant women who smoked prior to pregnancy contained 62

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

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?

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