You've observed the following returns on Pine Computer's stock over the past five years: 13 percent, 8 percent, 16 percent, 16 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 5 percent. a. What was the average real return on the company's stock? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g. , 32.16.) b. What was the average nominal risk premium on the company's stock? (Do not round intermediate calculations and enter your answer as a percent rounded to 1 decimal place, e.9., 32.1.)