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大学,概率论与数理统计题目,需详解,急急急
1个回答
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F(z)=P(Z<=z)=1-P(Z>z)=1-P(X>z,Y>z)
=1-P(X>z)*P(Y>z)=1-[1-P(X<=z)]*[1-P(Y<=z)]
=1-[1-F(z)]*[1-G(z))]
*为乘号
=1-P(X>z)*P(Y>z)=1-[1-P(X<=z)]*[1-P(Y<=z)]
=1-[1-F(z)]*[1-G(z))]
*为乘号
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