Problem D.1 Question Help 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 8 haircuts per hour. a) The average number of customers waiting for haircuts = 0.50 customers (round your response to two decimal places). b) The average number of customers in the shop = customers (round your response to two decimal places). Enter your answer in the answer box and then click Check Answer. 3 parts Clear All Check Answer remaining