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Consider the following table for a period of six years: ReturnsYear Large-Company Stocks U.S. Treasury Bills 1 –15.69 % 7.49 % 2–26.77 8.09 3 37.43 6.07 4 24.13 6.07 5 –7.56 5.55 6 6.77 7.94Calculate the arithmetic average returns for large-company stocksand T-bills over this time period. Arithmetic average returnsLarge-company stock % T-bills % Calculate the standard deviation ofthe returns for large-company stocks and T-bills over this timeperiod. Standard deviation Large-company stock % T-bills %Calculate the observed risk premium in each year for thelarge-company stocks versus the T-bills. a. What was the arithmeticaverage risk premium over this period? (A negative answer should beindicated by a minus sign. Average risk premium % b. What was thestandard deviation of the risk premium over this period? Riskpremium standard deviation %