如果李凌面临一个投资项目:有70%的概率在一年内让自己的投资金额翻倍,30%的概率让自己的投资金额减半。则该投资的收益率的标准差是()。(计算过程保留小数点后四位)
2023-07-10
A:55.00%
B:47.25%
C:68.74%
D:85.91%
参考答案:C
B:47.25%
C:68.74%
D:85.91%
参考答案:C
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2023-07-10
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