Consider the following rates of return: Year Large- Company Stocks 1 3.96% 2 14.12 3 19.01 4 -14.67 5 -32.16 6 37.26 US Treasury Bill 4.50% 4.88 3.80 6.96 4.88 6.14 c-1 Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the arithmetic average risk premium over this period? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) c-2 Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the standard deviation of the risk premium over this period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) c-1. Average risk premium C-2 Standard deviation % %