[问题] 题目有个地方不太懂

楼主: vivian8138 (小喵)   2013-07-29 18:31:42
现在在准备examp
但是有个地方看不太懂
是74题 有个说d/dr Ft(t) (Uniformly distributed (8,12))
为何d/dr Ft(t) 会是1/4 ?
Q_Q
作者: amiabest (蛙式低)   2013-07-29 19:12:00
是因为是uni(8,12) ,所以pdf=1/(12-8) = 1/4的关系吗?
作者: howtodowell (well)   2013-07-29 20:16:00
d/dtF(t)=f(t) where T~U(8,12)if T~U(a,b) then f(t)=1/(b-a)

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