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【单选题】
设随机变量X，Y独立同分布且X的分布函数F(x)，则Z＝max｛X，Y｝的分布函数为 ( )．A.
F2(x)
B.
F(x)F(y)
C.
1－[1－F(x)]2
D.
[1－F(x)][1－F(y)]
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