在投资规模相同的情况下,标准离差越大的项目,其风险()
A.越大
B.越小
C.不变
D.不确定
正确答案是A
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上一篇:A、B、C相互独立,P(A)=0.4,P(ABC)=0.04,那么P(BC)=( )。
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