看板 Math 關於我們 聯絡資訊
https://i.imgur.com/xshQ5e5.jpg
想請問這題是正確的嗎 如果x所有點的機率皆是0 謝謝! ----- Sent from JPTT on my Xiaomi Redmi Note 4. -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 180.217.138.206 (臺灣) ※ 文章網址: https://www.ptt.cc/bbs/Math/M.1580901846.A.962.html
alan23273850: 如果是離散變數,答案就是 false 了吧 02/05 21:31
alan23273850: 例如硬幣正反面,結果非正即反 02/05 21:32
urban01 : f 只有連續型才是題意那樣 02/07 12:12
JuanMaestrow: If X follows continuous distribution then P(X=x) 02/10 07:47
JuanMaestrow: =0. if X is finite space like Bernoulli(p) then 02/10 07:47
JuanMaestrow: P(X=1)=p and P(X=0)=1-p. Since the questions sa 02/10 07:47
JuanMaestrow: ys X is any random variable, the answer is false 02/10 07:47
JuanMaestrow: because that’s not always the case. 02/10 07:47