Suppose we have the following Treasury bill returns and inflation rates over an eight-year period: Year Treasury Bills Inflation 1 7.70% 9.20% 2 8.46 12.88 3 6.31 7.41 4 5.48 5.24 5 5.89 7.17 6 8.11 9.52 7 11.10 13.84 8 12.70 13.19 Calculate the average return for Treasury bills and the average annual inflation rate (consumer price index) for this period. Note: Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16. Calculate the standard deviation of Treasury bill returns and inflation over this time period. Note: Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16. What was the average real return for Treasury bills over this pe