Please answer part C

Suppose we have the following Treasury bill returns and inflation rates over an eight- year period: Year 2 3 ENMOO 00 Treasury Bills 10.77% 11.69 9.38 8.65 9.20 11.56 14.45 16.33 Inflation 13.17% 16.35 10.62 8.27 10.62 13.11 17.33 17.27 5 6 7 8 a. Calculate the arithmetic average return for Treasury bills and the average annual inflation rate (consumer price index) for this period. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Answer is complete and correct. Average return 11.50 % Treasury bills Inflation 13.34 % 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.) Answer is complete and correct. Standard deviation 2.69 % Treasury bills Inflation 3.40% c. What is 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. Average real return 1.62 %