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作者 MiNiMusi 在 PTT [ Statistics ] 看板的留言(推文), 共5則
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1F→:不就解答寫得那樣@@10/30 00:33
2F→:我覺得解答的X寫成 另X表到達車站的人數 就好10/30 00:37
3F→:只不過X是條件的機率分配 第一題就是要求E(X)10/30 00:37
4F→:E(X) = E(E(X|T=t)) = E(1/B*T) =1/B * E(T)10/30 00:39
5F→:這種題目 做個幾次就熟捻了~10/30 00:40
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