Answer to Question 9:
Part a:
Weight of Stock A = 1/3
Weight of Stock B = 1/3
Weight of Stock C = 1/3
Boom:
Expected Return = (1/3) * 0.15 + (1/3) * 0.02 + (1/3)
*0.34
Expected Return = 0.1700
Bust:
Expected Return = (1/3) * 0.03 + (1/3) * 0.16 + (1/3) *
(-0.08)
Expected Return = 0.0367
Expected Return of Portfolio = 0.60 * 0.1700 + 0.40 *
0.0367
Expected Return of Portfolio = 0.1167 or 11.67%
Part b:
Weight of Stock A = 0.20
Weight of Stock B = 0.20
Weight of Stock C = 0.60
Boom:
Expected Return = 0.20 * 0.15 + 0.20 * 0.02 + 0.60 *0.34
Expected Return = 0.2380
Bust:
Expected Return = 0.20 * 0.03 + 0.20 * 0.16 + 0.60 *
(-0.08)
Expected Return = -0.0100
Expected Return of Portfolio = 0.60 * 0.2380 + 0.40 *
(-0.0100)
Expected Return of Portfolio = 0.1388 or 13.88%
Variance of Portfolio = 0.60 * (0.2380 - 0.1388)^2 + 0.40 *
(-0.0100 - 0.1388)^2
Variance of Portfolio = 0.01476
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