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

Year	Large Company	US Treasury Bill
1	3.66%	4.66%
2	14.44	2.33
3	19.03	4.12
4	14.65	5.88
5	32.14	4.90
6	37.27	6.33

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, e.g., 32.16.)
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 rounded to 2 decimal places, e.g., 32.16.)
c-1.	Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the average risk 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, e.g., 32.16.)
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, e.g., 32.16.)

a.	Large-company stocks		%
	T-bills		%
b.	Large-company stocks		%
	T-bills		%
c-1.	Average risk premium		%
c-2.	Standard deviation		%