Problem 11-6 Risk Premiums (LO1) Assume these are the stock market and Treasury bill returns for a 5-year period: points Year 2011 2012 2013 2014 2015 Stock Market Return (%) -32.93 32.80 13.56 4.98 20.76 T-Bill Return (%) 5.10 1.40 0.32 0.09 0.11 eBook Print a. What was the risk premium on common stock in each year? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.) References Year 2011 2012 2013 2014 2015 Risk Premium (38.03) % 31.40 % 13.24% 4.89 % 20.65% b. What was the average risk premium? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Average risk premium 6.43 % Year 2011 Risk Premium (38.03) % 31.40 % 13.24% 4.89 % 20.65 % 2012 2013 2014 2015 points eBook Print b. What was the average risk premium? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) References Average risk premium 6.43 % c. What was the standard deviation of the risk premium? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Standard deviation %