Problem:
Andrew the barber owns a four chai shop. andrew estimated that each barber would take an average of 30 min to give a haircut in an exponentially distribution fashion. customers arrive at the rate of 6 per hour in a poisson distribution.
Required:
Find the following.
Question 1) the average number of customer waiting.
Question 2) the average time in minutes a costumer is in the shop.
Solve the numerical problem and show all work.