The pharmacist at Arnold Palmer Hospital, Wende Huehn$-$Brown, receives $15$ requests for prescriptions each hour, Poisson distributed. It takes her a mean time of $3$ minutes to fill each, following a negative exponential distribution. The waiting line table is provided below and also we know that W$\_$q$=$L$\_$q$/\backslash$lambda $.$ Click the icon to view the waiting line table. a$)$ Using the table, the average number of prescriptions in the queue $=$ prescriptions $($round your response to two decimal places$).$