Larry Ellison starts a company that manufactures high-end custom leather bags. He hires two employees. Each employee only begins working on a bag when a customer order has been received and then she makes the bag from beginning to end. The average production time of a bag is 1.8 days with a standard deviation of 2.7 days. Larry expects to receive one customer order, per day on average. The arrival process follows a Poisson distribution. What is the expected duration, in days, between when an order is received and when production begins on the bag