※ [本文轉錄自 Grad-ProbAsk 看板 #1CWxapmW ]
X為隨機選取某一特定類型的鍋爐表面具有缺陷的數目.
假設X具有poission分配,且平均數為G(未知),
過去的經驗指出G的先天機率是p{G=4}=0.3, P{G=5}=0.5, P{G=6}=0.2.
(a) Given that the true mean of X is 5, what is the probability that a
randomly selected boiler has at most two flaws?
(b) Under that prior probabilities, what is the probability that a randomly
selected boiler has exactly two flaws?
(c) Suppose that a boiler was randomly selected and found that it had exactly
two flaws, Using this information, revise the prior probabilities of G
想請問第一題是這樣嗎? p(X<=2 已知G=5)
第二題是 0 嗎
第三題
我想了很久,不知從何下手
覺得是poission分配 可是又有先天機率
我一直不懂題目給先天機率的用意
希望能告訴我這題的觀念~謝謝
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◆ From: 61.224.103.33
※ 編輯: hqq1232000 來自: 61.224.101.235 (09/06 08:03)
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孩提時,這世界圍繞著我運轉
現在我聲嘶力竭地追逐這個真實世界!
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◆ From: 61.224.102.187
※ 編輯: hqq1232000 來自: 61.224.102.187 (09/06 14:06)