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Sore Help Save & Exit Sube Check my work 2 Assume these are the stock market and Treasury bill returns for a 5-year period: Year 2011 2012 2013 2014 2015 Stock Market T-b3ll Return Return (2) -33.33 4.70 32.50 1.10 13.76 0.30 4.65 28.26 00:56.14 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.) Book Print Year 2011 2012 2013 2014 2015 Risk Premium % % 96 % 96 erences 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 promium 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