一位养老基金管理人正在考虑两种共同基金:股票基金( S ), E ( r s ) = 13 % , σ s = 20 % ; 长期政府债券基金( B ), E ( r B ) = 8 % , σ B =1 2 % 。另有,股票基金与长期政府债券基金的相关系数为 0.3,即ρ SB =0. 3。试求:上述两种风险基金的最小方差组合的投资比例是多少?( )。(计算过程中请保留到小数点后面两位)
【简答题】根据首字母提示或括号内的汉语意思拼写单词。 1. We gained a lot of p_____ from your advice. 2. Your technical _____ (援助) in the project is greatly appreciated. 3. We went to the party with our parents' a_____. 4. I want to ...