Fantastic styling salon is run by three stylists, each capable of serving 3 customers, on average. During busy periods of the day, when six customers on average arrive per hour, all three stylists are on staff. a. if all customers wait in a common line for the next available stylist, how long would a customer wait in line, on average, before being served? b. suppose that each customer wants to be served by a specific stylist, having each stylist wanted by 1/3. How long would a customer wait in line, on average, before being served?