Customers arrive at Rich? Dunn's Styling Shop at a rate of 4 per? hour, distributed in a Poisson fashion. Service times follow a negative exponential? distribution, and Rich can perform an average of 6 haircuts per hour.
1. The average number of customers waiting for haircuts= ?(round your response to two decimal? places).
2. The average number of customers in the shop= ?(round your response to two decimal? places).
3. The average time a customer spends in the shop= ?(round your response to two decimal? places).
4. The percentage of time that Rich is busy= ?(round your response to two decimal? places).