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-
P is a probability mass function if it maps each event
A into a real number
and
- i)
![](img12.gif)
- ii)
![](img13.gif)
- iii) If A and B are mutually exclusive events, then
.
- In fact, for any sequence of pair-wise-mutually-exclusive events,
(i.e.
for any
we have
![](img18.gif)
Ken Vastola
Fri Mar 15 14:12:07 EST 1996