(5 marks) Question Two: At a bank's ATM location with a single machine, customers arrive at the rate of one every other minute. This can be modeled using a Poisson distribution. Each customer spends an average of 90 seconds completing his/her transactions. Transaction time is exponentially distributed. Determine a) The average time customers spend from arriving to leaving, (5 marks) (5 marks) b) The chance that the customer will not have to wait, (5 marks) c) The average number waiting to use the machine