A retailer tracks their inventory of a particular product with a continuous review system. Each week, demand for the product has a normal distribution with a mean of 20 units and a standard deviation of 5 units. Demands in different weeks are independent. When the inventory falls to 200 units, the retailer places an order for 350 units; this order arrives exactly five weeks after order is placed. What is the retailer's average inventory level for this product (i.e., including both cycle inventory and safety inventory)? Type your answer... 8 points Consider the three-month aggregate production plan presented in the table below; some variables have been omitted for brevity. What is the average flow time (in months) from inventory during for this three-month production plan