Customers arrive at Rich$$ Dunn's Styling Shop at a rate of per$$ hour, distributed in a Poisson fashion. Service times follow a negative exponential$$ distribution, and Rich can perform an average of haircuts per hour.

Part $2$

$$a$)$ The average number of customers waiting for haircuts$=$

$$

$0\mathrm{.}05$ customers $($round your response to two decimal$$ places$).$