Consider the following table for the perlod from 1973 through 1980. a. Calculate the average return for Treasury bills and the average annual Inflation rate (consumer price index) for this period. Note: Do not round Intermedlate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16 . b. Calculate the standard devlation of Treasury bill returns and inflation over this time period. Note: Do not round Intermedlate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16 . c. Calculate the real return for each year. Note: A negative answer should be Indlcated by a minus sign. Do not round Intermedlate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16. d. What is the average real return for Treasury bills? Note: A negative answer should be Indlcated by a minus sign. Do not round Intermedlate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16