Question 7 5 pts At a local Cannabis Dispensary, customers arrive at a rate of 17 per hour, and the service times average 2.5 minutes. Assume the Poisson and exponential distributions. a. What is ? What is ? b. Find average number of customers in the system. c. Find average time in the waiting line. d. Find probability that there is one person waiting. e. Find probability an arrival will have to wait.