Question
The union for a particular industry has determined that the standard deviation of the daily wages of its workers is $18. A random sample of
The union for a particular industry has determined that the standard deviation of the daily wages of its workers is $18. A random sample of 80 workers in this industry has a mean daily wage of $120. Find a 95% confidence interval for the true mean daily wage of all union workers in the industry. Then complete the table below.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
- What is the lower limit of the 95% confidence interval?
- What is the upper limit of the 95% confidence interval?
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Transportation A Global Supply Chain Perspective
Authors: John J. Coyle, Robert A. Novak, Brian Gibson, Edward J. Bard
8th edition
9781305445352, 1133592961, 130544535X, 978-1133592969
