Riverside Bank runs a branch ofce in Tree River, Texas. The bank has received several complaints about waiting times on Fridays. A consulting company, Super-Queue, composed of Bauer Honors SCM graduates, has been hired to look into the problem. Analysis shows that on Fridays, customers arrive at a rate of 36 per hour Poisson-distributed, and the teller can serve 40 customers per hour, Exponentially-d istributed. Given these data, on average, how many people are waiting in line? Round your answer to the closest whole numberdo not show any decimal places