You can use the template file Q.xIsx provided here to help solve this question. A hair salon provides low-cost haircuts at a shopping center in Boise, Idaho. During the day, customers arrive at an average rate of 8 per hour following a Poisson distribution. After a customer is in a cosmetician's chair, it takes an average of 20 minutes for the haircut to be completed, with the actual service time following an exponential distribution. (Round your answers to four decimal places.) (a) If there are 3 cosmetician's on duty, how many customers are typically waiting for service? customers How long will customers have to wait on average (in minutes) before receiving service? minutes (b) If there are 4 cosmetician's on duty, how many customers are typically waiting for service? customers How long will customers have to wait on average (in minutes) before receiving service? minutes (c) If there are 5 cosmetician's on duty, how many customers are typically waiting for service? customers How long will customers have to wait on average (in minutes) before receiving service? minutes (d) If you managed this store, how many cosmetician's would you employ and why? It would make the most sense to employ. cosmeticians since this would result in the