What is the return on Portfolio A that contains a long margined (IM = 52%) position in 65% of American Airlines and the remainder in the risk-free asset? Also, Calculate the levered standard deviation of the Portfolio A

a) The return on American Airlines (AAL), R_AAL = %

b) The return on the portfolio, R_Pa = %

c) Write formula with inputs

d) Levered Standard Deviation Portfolio A=

Practical Applications of MPT Based on the work of Professor Harry Markowitz

Table 15.1 Security Price Data
Date	Sparks Network	ROPCSpk	Kohl's	ROPCK	Am. Airlines	ROPCa	S&P 500 Stock Index	ROPCm	1/15/28 3.75% TBond		Ryan 10-yr Bond Index	ROPCbm	jtROPC (P)	jtROPC (M)
Today: 15-Sep	5.44		62.16		35.84		2155.21		105.8300	ROPCb	1520.14
22-Sep	8.09		75.22		28.31		2234.56		105.7127		1525.62
29-Sep	6.37		41.47		41.01		2552.15		105.0071		1513.01
6-Oct	10.65		41.48		41.00		2561.02		105.7764		1510.33
13-Oct	12.32		43.52		38.99		1953.25		105.6717		1492.42
20-Oct	11.53		39.77		42.35		2043.63		105.5346		1488.13
27-Oct	14.30		46.2		35.50		2256.61		107.3021		1500.08
3-Nov	14.62		37.39		42.26		2392.79		105.6177		1491.64
10-Nov	15.76		38.31		41.22		2435.92		106.0200		1489.41
					AAL	Long		Long		Long		Long
Table 15.2	T-Bond Quotation (15-Sep)
Maturity	Coupon	Bid	Asked	Chg	Asked Yld
1/15/2028	3.75	105.15	105.83	-0.0078	3.12