某投资者准备投资于A、B、C、D四种股票,其贝他系数分别为1.8、1.5、0.7和1.2。该投资者拟定了以下两种投资组合方案: 股票公司 A B C D 甲方案 40% 30% 20% 10% 乙方案 30% 30% 20% 20% 已知平均风险股票的必要收益率为15%,国库券的收益率为12%。试计算两个方案的综合贝他系数和预期收益率。
参考答案:
Henry.s plans was ()the couple to dinner at a nice
Henry.s plans was ()the couple to dinner at a nice restaurant and then ask them