# Question: assume the average age of an mba student is 313...

###### Question details

Assume the average age of an MBA student is 31.3 years old with a standard deviation of 2.3 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 93% of the students around the mean.

e) Using Chebyshev's Theorem, determine the range of ages that will include at least 78% of the students around the mean.