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Qs [17 pts]. In order to increase security around its campus at night, a university employs a walking escort service, consisting of 13 specially trained officers that accompany students from one campus location to another. If there are no officers available when a request is received, the dispatcher puts the request in a virtual queue. Students do not balk or abandon this queue. On average, 12 students request the service every hour. The time between requests is variable with a standard deviation of 5 minutes. It takes, on average, 60 minutes for an officer to pick up a student and take them to their desired location, with a standard deviation of 20 minutes. A [13 pts]. How long does it take, on average, from the moment a student submits a request to the moment the student arrives at their destination? How many student requests are there, on average, in the virtual queue? B [4 pts]. Under what (general) condition/s is it better not to pool all officers together, but to have dedicated (groups of) officers providing service to students? Briefly explain your reasoning (in 3-5 sentences)