1. Consider the following table over the period from 2015 through 2020: Year T-bill return (%) Large co. Stock return (%) 4.54 Risk premium (%) -1.96 2015 6.50 2016 12.30 4.36 7.94 2017 18.99 4.23 14.76 2018 7.29 -21.98 - 14.69 -26.47 2019 7.99 -34.46 2020 27.23 4.87 20.36 Total 21.90 37.24 -15.34 a. b. C. Calculate the arithmetic average returns for large-company stocks over this period. Calculate the arithmetic average returns for T-bills over this period. Considering degrees of freedom, calculate the standard deviation of the returns for large-company stocks over this period. d. Considering degrees of freedom, calculate the standard deviation of the returns for T-bills over this period. Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the average risk premium over this period? e