Assume the average age of an MBA student is 32.4 years old with a standard deviation of 2.6 years. a) Determine the coefficient of variation. b) Calculate the z-score for an MBA student who is 29 years old. c) Using the empirical rule, determine the range of ages that will include 68% of the students around the mean. d) Using Chebyshev's Theorem, determine the range of ages that will include at least 96% of the students around the mean. e) Using Chebyshev's Theorem, determine the range of ages that will include at least 86% of the students around the mean