Youve observed the following returns on Crash-n-Burn Computers stock over the past five years: 10 percent, 10 percent, 17 percent, 22 percent, and 10 percent. Suppose the average inflation rate over this period was 1.5 percent and the average T-bill rate over the period was 3 percent. What was the average real risk-free rate over this time period? What is the average real rist premium?