Problem 5 A small computer store can only store up to 3 comp…

Problem 5 A small computer store can only store up to 3 computers. Customers arrive at a Poisson rate of 2 per week to buy a computer if available. When only 1 computer remains, the store orders 2 more, which takes exponentially distributed time with a mean of 1 week. Sales may reduce inventory to 0 during delivery.