deletions | additions       diff --git a/subsection_The_Distribution_of_Arrival__.tex b/subsection_The_Distribution_of_Arrival__.tex  index 7f31a83..7e7ba8f 100644  --- a/subsection_The_Distribution_of_Arrival__.tex  +++ b/subsection_The_Distribution_of_Arrival__.tex 
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P(k) = \frac{\lambda^k \cdot e^{- \lambda}}{k!}  \end{equation}  where $\lambda$ is the mean arrival count.  The plot below shows the probability mass function (\textit{pmf}) \eqref{Poisson}  under the Poisson distribution in three cases ($\lambda=1$, $\lambda=4$ and $\lambda=10$).