(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The number of customers entering a cafe during tea time is known to be poisson distribution with λ = 5.

on a particular day, given that at least 2 customers have entered the cafe during the tea time. what is the probability that at least 1 more customers will enter the cafe during tea time?

3. The attempt at a solution

I was thinking of using this :

[tex]P(X \geq 1 | X \geq 2) = \frac{P(X \geq 1 \cap X \geq 2)}{P(X \geq 2)}[/tex]

However, i soon found that if i do that, the Probability will go to 1. it does not make sense. Please advice. thank you.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Poisson Distribution problem

**Physics Forums | Science Articles, Homework Help, Discussion**