Add notes for prob m5

1 files changed, 4 insertions, 0 deletions

diff --git a/sem6/prob/m4/notes.tex b/sem6/prob/m4/notes.tex
index 4a1aea0..227d8bc 100644
--- a/sem6/prob/m4/notes.tex
+++ b/sem6/prob/m4/notes.tex
@@ -143,3 +143,7 @@ The Poisson distribution can be used to approximate binomial distribution.
     Two independent Poisson r.v. added together give a poisson distribution with $\lambda = \lambda_1 + \lambda_2$.
 \end{lemma}
 
+
+\begin{lemma}
+    The interarrival between events are a exponential random variable with rate $\lambda$.
+\end{lemma}