The personnel director of a manufacturing company wants to estimate the average mechanical aptitude (as measured by a certain test) of a large group employees and she wants this estimate to be in error by at most 2 with probability 0.99. If it is presumed from experience that o=15 for this test, how large a sample is required?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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2. The personnel director of a manufacturing company wants to estimate the
average mechanical aptitude (as measured by a certain test) of a large group
employees and she wants this estimate to be in error by at most 2 with
probability 0.99. If it is presumed from experience that o=15 for this test, how
large a sample is required?
Transcribed Image Text:2. The personnel director of a manufacturing company wants to estimate the average mechanical aptitude (as measured by a certain test) of a large group employees and she wants this estimate to be in error by at most 2 with probability 0.99. If it is presumed from experience that o=15 for this test, how large a sample is required?
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