2 12345670 7.45% 8.90% 8.17 12.55 3 6.04 7.12 4 5.33 5.11 5 5.72 6.98 6 7.92 9.31 7 10.86 13.57 8 12.42 12.87 a. Calculate the average return for Treasury bills and the average annual inflation rate for this period. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. Calculate the standard deviation of Treasury bill returns and inflation over this period. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) c. What was the average real return for Treasury bills over this period? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Answer is complete but not entirely correct. a. Treasury bills 63.91 % a. Inflation: 76.41 % b. Treasury bills 18.79% b. Inflation 22.48 % c. Average real return -16.58 %