Consider the following table for the period from 1973 through 1980. T-bill return Year 1973 1974 1975 1976 1977 1978 1979 1980 Inflation 8.71% 12.34 6.94 4.86 6.70 9.02 13.29 12.52 29% 7.99 5.87 5.07 5.45 7.64 10.56 12.10 Requirement 1: Calculate the average return for Treasury bills and the average annual inflation rate (consumer price index) for this period. (Do not round intermediate calculations. Enter your answers as a percentage rounded to 2 decimal places (e.g., 32.16).) Average return for Treasury bills Average annual inflation rate 775 % 9.30 % Requirement 2: Calculate the standard deviation of Treasury bill returns and inflation over this time period.(Do not round intermediate calculations. Enter your answers as a percentage rounded to 2 decimal places (e.g., 32.16).) Standard deviation of Treasury bills Standard deviation of inflation