A journal reported a study examining the possible impact of air pollution on the weight of babies. Researchers found that 9% of 174 babies bom to mothers who were exposed to heavy doses of air pollution in a city were classified as having low birthweight. Only 5% of 2300 babies bom in another hospital in the city whose mothers had not been exposed to air pollution were similarly classified. Does this indicate a possibility that air polution might be linked to a significantly higher proportion of low-weight babies? a) Test an appropriate hypothesis at a=0.10 and state your conclusion. b) f you condluded there is a difference, estimate that difference with a confidence interval and interpret that interval in context. Identify the test statistic. (Round to two decimal places as needed.) Identify the P-value from the output of the hypothesis test. (Round to three decimal places as needed.) State the concusion. V Ho. There V sufficient evidence at the a =0.10 level of significance to conclude that the of low-weight babies born to mothers who were exposed to air pollution is the v of low-weight babies bom to mothers who were not exposed to air pollution. b) Find the confidence interval for the difference of two proportions, p, -P2 oorresponding to the test in part a population proportion answer below and, if necessary, fill in the answer boxes within your choice. sample proportion O A. The confidence interval is ) (Use ascending order. Round to three decimal places as needed.) O B. It was concluded that there is no difference in the proportions. Interpret the interval as needed. Select the correct answer below and, if necessary, fill in the answer boxes within your choice. O A. For % of samples, the proportion of low-birthweight babies will be between % and % higher for mothers exposed to high levels of air pollution than those who are not. lea asrandinn order Round tn nne darimal niare as needed)
A journal reported a study examining the possible impact of air pollution on the weight of babies. Researchers found that 9% of 174 babies bom to mothers who were exposed to heavy doses of air pollution in a city were classified as having low birthweight. Only 5% of 2300 babies bom in another hospital in the city whose mothers had not been exposed to air pollution were similarly classified. Does this indicate a possibility that air polution might be linked to a significantly higher proportion of low-weight babies? a) Test an appropriate hypothesis at a=0.10 and state your conclusion. b) f you condluded there is a difference, estimate that difference with a confidence interval and interpret that interval in context. Identify the test statistic. (Round to two decimal places as needed.) Identify the P-value from the output of the hypothesis test. (Round to three decimal places as needed.) State the concusion. V Ho. There V sufficient evidence at the a =0.10 level of significance to conclude that the of low-weight babies born to mothers who were exposed to air pollution is the v of low-weight babies bom to mothers who were not exposed to air pollution. b) Find the confidence interval for the difference of two proportions, p, -P2 oorresponding to the test in part a population proportion answer below and, if necessary, fill in the answer boxes within your choice. sample proportion O A. The confidence interval is ) (Use ascending order. Round to three decimal places as needed.) O B. It was concluded that there is no difference in the proportions. Interpret the interval as needed. Select the correct answer below and, if necessary, fill in the answer boxes within your choice. O A. For % of samples, the proportion of low-birthweight babies will be between % and % higher for mothers exposed to high levels of air pollution than those who are not. lea asrandinn order Round tn nne darimal niare as needed)
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Transcribed Image Text:A journal reported a study examining the possible impact of air pollution on the weight of babies. Researchers found that 9% of 174 babies bom to mothers who were exposed to heavy doses of air pollution in a city were classified as having low
birthweight. Only 5% of 2300 babies bom in another hospital in the city whose mothers had not been exposed to air pollution were similarly classified. Does this indicate a possibility that air pollution might be linked to a significantly higher
proportion of low-weight babies?
a) Test an appropriate hypothesis at a = 0.10 and state your condlusion.
b) If you concluded there is a difference, estimate that difference with a confidence interval and interpret that interval in context.
Identify the test statistic.
(Round to two decimal places as needed.)
Identify the P-value from the output of the hypothesis test.
(Round to three decimal places as needed.)
State the conclusion.
Ho. There
V sufficient evidence at the a = 0.10 level of significance to conclude that the
of low-weight babies born to mothers who were exposed to air pollution is
the
of low-weight babies bom to mothers who were not exposed to air pollution.
b) Find the confidence interval for the difference of two proportions, p, -P2 corresponding to the test in part a
population proportion
answer below and,
necessary, fill in the answer boxes within your choice.
sample proportion
O A. The confidence interval is (,).
(Use ascending order. Round to three decimal places as needed.)
O B. It was concluded that there is no difference in the proportions.
Interpret the interval as needed. Select the correct answer below and, if necessary, fill in the answer boxes within your choice.
O A. For % of samples, the proportion of low-birthweight babies will be between % and
% higher for mothers exposed to high levels of air pollution than those who are not.
A lee aerendinn orter Round tn one dacimal nlace ae needed)
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