Customers arrive at paul harrold’s styling shop at a rate of 3 per

Customers arrive at Paul Harrold’s Styling Shop at a rate of 3 per hour, distributed in a Poisson fashion. Paul can perform haircuts at a rate of 5 per hour, distributed exponentially. 


a) Find the avg. number of customers waiting for haircuts.
b) Find the avg. number of customers in the shop.
c) Find the avg. time a customer waits until it is his or her turn.
d) Find the average time a customer spends in the shop.
e) Find the % of time that Paul is busy.

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