Question 7 0.3 points Patients arrive to a clinic at the rate of 30 per hour. The clinic is open for 24 hours a day. The average service time for a patient is about 45 minutes. Assume that all MlM/s assumptions apply and there are 3 doctors available in the clinic. What is the average arrival rate if the units are in minutes? O30 O 0.5 O 0.8333 (9 1.25 O 45 0 0.1389