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Nov 30, 2010 at 21:56 answer added Did timeline score: 2
Jun 21, 2010 at 10:05 answer added Grzenio timeline score: -2
Jun 21, 2010 at 10:04 vote accept Grzenio
Jun 13, 2010 at 18:22 answer added Jeff Schenker timeline score: 6
Jun 10, 2010 at 7:38 comment added Grzenio Hi @Mark, $t$ and $X$ are positive. It would be nice if $Z_t$ was positive as well, but its not really a requirement.
Jun 9, 2010 at 17:43 comment added Mark Meckes Do you want to assume that $t$, $X$, and $Z_t$ are positive?
Jun 9, 2010 at 17:19 comment added vad Never mind. I understand why my suggestion does not make sense. You have three random variables here Z, X and T. I was interpreting T somewhat differently ...
Jun 9, 2010 at 17:13 history edited Mark Meckes CC BY-SA 2.5
Fixed typo I introduced.
Jun 9, 2010 at 16:07 comment added vad P[Z_t > T] cannot equal P[X>t] as the pdf of Z is greater than 0 for X_t > t and 0 otherwise. You can do a simulation to check the definition. By the way, if you want a closed form for Z_t you should provide more information for X_t.
Jun 9, 2010 at 16:03 history edited Grzenio CC BY-SA 2.5
clarified
Jun 9, 2010 at 15:46 answer added Mark Meckes timeline score: 1
Jun 9, 2010 at 15:17 comment added Grzenio Hi @Anon, I might be wrong but I thing that with the definition you provided P[z_t > T] = P[X>T] and not P[X>T | X>t] (for T>t)
Jun 9, 2010 at 15:10 comment added vad I am not sure I understand the difficulty. Define Z_t = X_t I(X_t > t) and you are done. Is there something I am missing here?
Jun 9, 2010 at 14:52 history asked Grzenio CC BY-SA 2.5