SOLUTION: 234 employees selected randomly from one company, 12.82 % of them commute by carpooling. Construct a 90% confidence interval for the true percentage of all employees of the company

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Question 695063: 234 employees selected randomly from one company, 12.82 % of them commute by carpooling. Construct a 90% confidence interval for the true percentage of all employees of the company who carpool.
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Confidence interval - proportion

90% confidence level
sample proportion = 0.1282
n = 234
z%5B.05%5D+=+1.645+
half-width = 0.036
lower confidence limit = 0.092
upper confidence limit = 0.164

Answer: (0.092, 0.164)