You've observed the following returns on Crash-n-Burn Computer's stock over the past five years: 3 percent, 12 percent, 25 percent, 13 percent, and 15 percent. The average inflation rate over this period was 3 percent and the average T-bill rate was 4.7 percent. What was the average real return on the company's stock? What was the average nominal risk premium on the company's stock