Question

Making a sale on a customer call is 0.16 What’s the probability no sales will be made in 12 calls

Answer 1

Let the random variable $X$ represent the sales made on a customer call then, $X\sim Poisson(\lambda)$ where $\lambda=0.16\times 12=1.92$

We find,

$p(X=0)={e^{-1.92}1.92^0\over 0!}=e^{-1.92}=0.1466$

The probability that no sales will be made in 12 calls is 0.1466