Recall (from Exercise 2.26) that the mean base salary of a software engineering manager is $126,417 (Electronic Design’s 2012 Engineering Salary Survey). Assume (as in Exercise 2.38) that the distribution of base salaries for all software engineers is mound-shaped and symmetric with a standard deviation of  15,000. Use your understanding of the Empirical Rule to find:
a. The 84th percentile.
b. The 2.5th percentile.
c. The z-score for a salary of $100,000.

Data from Exercise 2.26

According to Electronic Design’s 2012 Engineering Salary Survey, the mean base salary of a software engineering manager is $126,417—the highest mean among all types of engineers.