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4,13,22,31,45,54,(),() A.60, 68;B.55, 61; C.63
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9,15,22, 28, 33, 39, 55,() A.60;B.61;C.66;D.58;
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9, 15, 22, 28, 33, 39, 55, () A.60 B.61 C.66 D.58
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4, 13, 22, 31, 45, 54, () A. 60,68 B. 61,70 C. 55,61 D. 72,80
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9, 15, 22, 28, 33, 39, 55, () A.60 B.61 C.66 D.58
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4, 13, 22, 31, 45, 54, () A. 60,68 B. 61,70 C. 55,61 D. 72,80
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最小方差资产组合的期望收益率和标准差分别为( )。A.18.61%;23.48%B.15.61%;16.54%C.13.39%;13.9