Question 1 12 points Save Answer Calls come in to a 24 hour hotline to Radio Lyus at an average rate of 3 calls per minute, following a Poisson distribution. There is only one operator, who services the calls with an average service time of 15 seconds per call following an exponential distribution. What is the average number of calls in the system? calls. To the nearest percent, what is the probability that more than 2 calls are in the system (including in service)? percent. What average service time is necessary if we want the average time a call spends in the system (wait time plus service time), to be only 42 seconds? Give answer to one decimal. seconds per call