Suppose that the arrival of patients to a clinic follows a Poisson process with an average rate of 3 per hour (i.e. inter-arrival times areExponentially distributed with a mean of 1/3 hr). The expected service time for each patient is 15 minutes (1/4hr) and the standard deviation of service time is 3 minutes (0.05 hr). What is the expected number of patients in the waiting room of this clinic (in other words, the expected queue length)? Blank 1. Fill in the blank, read surrounding text. (use two decimal places, hint: use M/G/1 queue)