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[15%] An office electronics distribution centre supplies various retailers around the province and sells on average 40 computer monitors each week. These monitors are supplied by an overseas manufacturer. The following informa- tion is known about the monitors: Weekly average monitor demand (1) 40 Weekly monitor demand standard deviation (0) 8 Weekly holding cost per monitor $18.00 Order cost per order $45.00 Lead time 1 weeks Working weeks per year 50 weeks (a) What is the yearly average demand for computer monitors? (b) Find the order lot size Q that gives the economic order quantity (EOQ). What is the time between orders (in weeks)? (c) Calculate the total inventory cost using the EOQ. The company currently uses a periodic review inventory control system with a period (P) of 8 weeks. (d) Given that the distribution centre wants a 99.5% service level, what is the required safety stock? (e) What is the required target inventory level (T)? (f) Calculate the annual inventory cost of this periodic review system. (g) The company is committed to a periodic review system, but thinks it may be incurring unnecessary costs. Suggest a better period (P) that will decrease the annual inventory cost. What is the expected cost of your proposed P