A simple random sample of 32 postal employees showed their average time working for the postal service was 7.22 years with a standard deviation of 1.52 years. Estimate the true mean working time for postal service with 91% confidence and give full calculator syntax and give the proper interpretation of the confidence interval.
A simple random sample of 32 postal employees showed their average time working for the postal service was 7.22 years with a standard deviation of 1.52 years. Estimate the true mean working time for postal service with 91% confidence and give full calculator syntax and give the proper interpretation of the confidence interval.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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