The mean annual salary for a sample of electrical engineers is ($86,500), with a standard deviation of
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The mean annual salary for a sample of electrical engineers is \($86,500\), with a standard deviation of \($1500\). The data set has a bell-shaped distribution.
(a) Use the Empirical Rule to estimate the percent of electrical engineers whose annual salaries are between \($83,500\) and $89,500.
(b) The salaries of three randomly selected electrical engineers are $93,500,
\($85,600\), and \($82,750\). Find the z-score that corresponds to each salary.
Determine whether any of these salaries are unusual.
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Related Book For
Elementary Statistics Picturing The World
ISBN: 9781292260464
7th Global Edition
Authors: Betsy Farber, Ron Larson
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