Suppose we have the following returns for large-company stocks and Treasury bills over a six year period: a. Calculate the arithmetic average returns for large-company stocks and over this period. (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 places, e.g. 32.16.) Calculate the standard deviation of the returns for large-company stocks and T-bills over this period. (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g., 32.16) Calculate the observed risk premium in each year for the large company stocks versus the T-bills. What was the over this period? (Negative amount should be by a minus sign. Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, eg., 32.16.) Calculate the observed risk premium in each year for the large company stocks versus the T-bills. What was the standard deviation the risk over the period? (Do round calculations. Enter your answer as a percent rounded to 2 decimal places, e. g., 32.16)