In a random sample of 400 students at a university, 336 stated that they were nonsmokers. Based on this sample, compute a 90% confidence interval for the proportion of all students at the university who are nonsmokers. Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult a list of formulas.) Lower limit: X. Upper limit:

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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In a random sample of 400 students at a university, 336 stated that they were nonsmokers. Based on this sample, compute a 90%
confidence interval for the proportion of all students at the university who are nonsmokers. Then find the lower limit and upper limit of the
90% confidence interval.
Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult a
list of formulas.)
Lower
limit:
X.
Upper
limit:
Transcribed Image Text:In a random sample of 400 students at a university, 336 stated that they were nonsmokers. Based on this sample, compute a 90% confidence interval for the proportion of all students at the university who are nonsmokers. Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult a list of formulas.) Lower limit: X. Upper limit:
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