Assume these are the stock market and Treasury bill returns for a 5-year period:

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Assume these are the stock market and Treasury bill returns for a 5-year period Stock Market Year 2011 2012 2013 2014 2015 Return (%) Return (%) 34.03 32.10 14.16 3.98 19.76 4.40 0.80 0.28 0.05 0.07 Year 2011 2012 2013 2014 2015 Risk Premium (38.43) 1 % 31.30 % 13.88 % 3.9 % 19.69 % b. What was the average risk premium? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Answer is complete and correct. 6.07 % Average risk premium 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