I dont need this , please delate this question

A clinic has only one dentist. During working days, the traffic is uniformly busy with patients arriving at the rate of 10 patients per hour. The doctor's service time is 5 minutes. 1. What is the probability that the clinic is empty (except for the dentist)? 2. What is the average number of patients in the waiting room? 3. What is the average time a patient spends in the office (wait plus service)? 4. What is the probability that the clinic has exactly two patients? 5. What is the average time a patient spends in the waiting room if the clinic has 2 more dentists with the same service rate? A clinic has only one dentist. During working days, the traffic is uniformly busy with patients arriving at the rate of 10 patients per hour. The doctor's service time is 5 minutes. 1. What is the probability that the clinic is empty (except for the dentist)? 2. What is the average number of patients in the waiting room? 3. What is the average time a patient spends in the office (wait plus service)? 4. What is the probability that the clinic has exactly two patients? 5. What is the average time a patient spends in the waiting room if the clinic has 2 more dentists with the same service rate