183 Best-paid CEOs. Refer to the Forbes list of the 40 bestpaid chief executive officers, Exercise 17 . The salary and age of each CEO are saved in the FORBES40 file.

a. Use a graph to portray the relationship between a CEO’s salary and age. Do you detect a trend?

b. According to Chebyshev’s rule, what percentage of the age measurements would you expect to find in the intervals x { .75s, x { 2.5s, and x { 4s ?

c. What percentage of the age measurements actually fall into the intervals of part b? Compare your results with those of part b .

d. Repeat parts b and c for salary.