Suppose we have the following returns for large-company stocks and Treasury bills over a six-year period: 0. Calculate the arithmetic average returns for large-company stocks and T-bilis over this period. (Do not round Intermedlate colculotions end enter your answers as o percent rounded to 2 declmel ploces, e.g., 3216.) b. Calculate the standard deviation of the returns for large-company stocks and T-bills over this period. (Do not round intermedlate caleulatlons and enter your answers as a percent rounded to 2 decimal ploces, e.g., 32.16.) c-1. Calculate the observed risk premium in each year for the large-company stocks versus the T-bils. What was the average risk premium over this period? (A negative answer should be Indleated by a minus sign. Do not round intermedlete calculations and enter your onswer as a percent rounded to 2 decimal ploces. e.g., 32.16.) c2. 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 intermediete calculations and enter your answer as a percent rounded to 2 decimal ploces, e.g., 32.16.)