Ans.
Average annual return above Treasury bill return = 8%
Treasury bill return = 5%
Expected rate of return = 8% + 5% = 13%
Value of A = 2
Standard deviation = 30%
U = E(r) − 0.5 * Aσ2 = E(r) - 0.5 * 2σ2 = E(r) - 1* σ2 = E(r) - σ2
Wbills (a) | Windex (b) | E (r) (c) | SD (portfolio) (d) | (SD)2 (Portfolio) (e) | U(A = 2) (f= c-e) |
0 | 1 | 0.13 | 0.30 | 0.0900 | 0.0400 |
0.2 | 0.8 | 0.114 | 0.24 | 0.0576 | 0.0564 |
0.4 | 0.6 | 0.098 | 0.18 | 0.0324 | 0.0656 |
0.6 | 0.4 | 0.082 | 0.12 | 0.0144 | 0.0676 |
0.8 | 0.2 | 0.066 | 0.06 | 0.0036 | 0.0624 |
1 | 0 | 0.050 | 0.00 | 0.0000 | 0.0500 |
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