Q60 When there is a fixed charge for inventory replenishment (for example, a fixed shipping fee), inventory should be ordered by batches to take advantage of the economies of scale. True False A fast moving item tends to have a high level of days-of-supply. True False In the EOQ model the economies of scale implies that the inventory-related cost will be doubled when the demand rate is doubled. True False In the Newsvendor modelthe demand follows a Normal distribution with mean of 100 units and standard deviation of 15 units. If the order quantity is chosen at 100 units, leftover will NOT happen. True/ false In the order-up-to modelthe lead time implies two kinds of inventory in the system: on-hand inventory and on-order inventory True False In the order-up-to model, inventory decisions are made to match the supply and demand in the next lead time period. True False Inventory position is calculated as on-hand antory + all on-order inventory True False In a decentralized supply chain each stage may own private information which is not necessarily shared in the supply chain. True/ false