a Consider a small emergency clinic that has only one doctor, Dr. Michelle Crawford, on duty at a time. Arrivals at the clinic follow a Poisson distribution with a rate of 0.9 patients per hour. The average time Dr. Crawford spends with a patient is 40 minutes and the time she spends with a patient is exponentially distributed. Find steady-state values of a) The probability that there are no patients in the clinic b) The probability that the number of patients in the clinic is 4 or more c) The average number of patients in the clinic d) The average time a patient spends in the clinic e) The average time a patient spends waiting to see the doctor f) The average number of patients waiting to see the doctor