Question
A merchandise store next to a football stadium uses a continuous review system to track the sales and inventory levels of their football jerseys. Suppose
"A merchandise store next to a football stadium uses a continuous review system to track the sales and inventory levels of their football jerseys. Suppose that, in an off-season, the daily demand for the jerseys sold is approximately normally distributed with a mean of 15 jerseys and a standard deviation of 2 jerseys. Suppose that the jerseys have a constant delivery lead time of 7 days, and the unit purchase cost is $96/jersey. Fixed cost of ordering is $75/order. Suppose that the team's fans have little patience, causing the sale to be lost in the case of a stockout. The unit loss-of-goodwill cost associated with the lost sale is $5/unit. Further, assume the store uses an inventory carrying charge based on a 25 percent annual interest rate and the off-season lasts 200 days."
a) Determine the optimal values of the order quantity and the reorder level for the off-season (for the purpose of this problem you can ignore the infinite planning horizon assumption for the (q,r) policy and pretend the offseason is the only time in the year the store is open). If the algorithm has not converged after iteration 2, please report q2 and r2 as the optimal order quantity and reorder level. Further, ignore the fact that jerseys would normally be integers only.
b) What is the expected number of lost sales per inventory cycle and expected safety stock when a replenishment order is received based on the policy in part a) ?
c) Determine the average annual cost of inventory holding, setup and stock-out associated with the policy from part a)
d) What Type 1 service level is being achieved with the policy from part a)?
e) What Type 2 service level is being achieved with the policy from part a)?
f) What would the reorder level and order quantity be, if the company were to use a Type 1 service level of 97 percent?
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