The personnel director for a large firm selects a random sample consisting of 100 clerical employees, then finds out whether they have been with the firm for more than 5 years and how many shares of the company’s stock they own. The purpose is to see if longevity within the firm has an influence over the number of shares of stock that are held; ANOVA is to be used in analyzing the data. Identify the independent and dependent variables and explain whether this is a designed experiment.