Problem 8-1: The formulas for expected return, std. dev. and CV

Prob.	Return		(B-C8)^2
0.1	-30%		0.192721
0.1	-14%		0.077841
0.3	11%		0.000841
0.3	20%		0.003721
0.2	45%		0.096721
Expected	Return	0.139	13.90%
	Variance	0.047769
Standard	Deviation	0.2185612	21.90%