Suppose we have the following returns for large-company stocks and Treasury bills over a six-period:

Year Large Company US Treasury Bill

1	3.88%	5.78%
2	14.31	2.45
3	19.05	3.68
4	-14.63	7.12
5	-32.12	4.92
6	37.29	4.89

a. Calculate the arithmetic average returns for large-company stocks and T-bills over this period.( Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places.)

b. Calculate the standard deviation of the returns for large-company stocks and T-bills over this period. ( Do not round intermediate calculations and enter your answers as a percent to 2 decimal places.)

c-1. Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the average premium 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.)

c-2: Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the standard deviation of the risk premium over this period? ( Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places.)