occur at random, with an arrival rate of 30 customers per hour or 0.5 customers per minute. Determine the following operating characteristics for the system. (Round your answers to four decimal places.) (a) The probability that no customers are in the system (b) The average number of customers waiting See the rounding prompt for how many decimal places are needed. (c) The average number of customers in the system (d) The average time (in min) a customer spends waiting min (e) The average time (in min) a customer spends in the system ]min (f) The probability that arriving customers will have to wait for service