Renuka​ Jain's Car Wash takes a constant time of 3.0 minutes in its automated car wash cycle. Autos arrive following a Poisson distribution at the rate of 12 per hour. Renuka wants to​ know: ​a) The average wait time in the line ​= nothing minutes ​(round your response to two decimal​ places). ​b) The average number of customers waiting in the line ​= nothing cars ​(round your response to two decimal​ places).