The realized returns for the market and Johnson Drugs for the last four years are given below:
	Year	Market	Johnson
	1	10%	5%
	2	15%	0%
	3	-5%	14%
	4	0%	10%
An average stock has a required return of 12 percent, and the market risk premium is 4 percent.
If Johnson's expected rate of return is 8 percent, what is the difference between Johnson's
expected and required rates of return?