Assume the average age of an MBA student is 31.6 years old with a standard deviation of

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Assume the average age of an MBA student is 31.6 years old with a standard deviation of 2.8 years.
a. Determine the coefficient of variation.
b. Calculate the z-score for an MBA student who is 28 years old.
c. Using the empirical rule, determine the range of ages that will include 99.7% of the students around the mean.
d. Using Chebyshev’s Theorem, determine the range of ages that will include at least 94% of the students around the mean.
e. Using Chebyshev’s Theorem, determine the range of ages that will include at least 80% of the students around the mean.
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Business Statistics

ISBN: 9780321925121

2nd Edition

Authors: Robert A. Donnelly

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