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Contents

1 危覿
2 危覿 危覿 蟯螻
3 危 覿 蠏螻 覿
4


1 危覿 #

炎概螳 r螳 蟾讌 螻 襯覿

2 危覿 危覿 蟯螻 #

b*(n;r,p) = r/n * b(r;n,p)

3 危 覿 蠏螻 覿 #

亮 = r/p
2 = r/p(1/p - 1)

4 #

螳 D朱 讌覲 蟇碁Υ 襯 0.4企. 10覈 螳企 轟 願 3覯讌 覲 螳朱 襯?
> r <- 3
> n <- 10
> dbinom(1:10, size=10, prob=0.4)[3] * r / n
[1] 0.06449725
> 


A襯 覲旧 70% 螻朱ゼ 覲碁. 曙 6覯讌語 蟾讌 覲旧貅一 , 4覈 螳 螻朱ゼ 覲 襯
> r <- 4
> n <- 6
> p <- 0.7
> dbinom(1:n, size=n, prob=p)[r] * r / n
[1] 0.21609
> 

3螳 語 3螳螳 覈 覃 結伎 る 殊, 5讌 讌 3 襯?
> r <- 3
> n <- 5
> p <- 1/4
> dbinom(1:n, size=n, prob=p)[r] * r / n
[1] 0.05273438
> dbinom(1:n, size=n, prob=p)[r] * r / n * 2 #蠍磯.. 覃 or 結伎企 2襯 螻燕伎 覿..
[1] 0.1054688
> 
蠍 蠍郁鍵..
企: : るジ讓曙 襦螻豺 企Ν 譯殊語. 襦螻豺
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