[CST-2] CSM 98.9.3?

[Andrei Legostaev]

I'm not convinced by Nathan's explanation...

Unless I'm very confused a sum of exponentially distributed variables
Gamma-distributed.

At the same time there is a simple reason why the *rates* of
arrival/departure are the same: if they weren't then the system would not be
in equilibrium.  As far as I understand we only deal with stable systems in
this course (time-dependent Chapman-Kolmogorov aside).

Has this question generated enough confusion for us to ask TLH?

A