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4.13 (標準) 連続確率変数と離散確率変数の同時分布

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方針

Zは連続確率変数で,Wは離散確率変数なので,同時密度f_{Z,W}(z,w)のようなものを定義できない.Wは0か1なので,

P[Z\leq z, W=1],\ \ \ P[Z\leq z, W=0]

に分けて考えればよい.これが求める同時分布である.

答案

4.-18.jpg

参考文献

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