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2. Richie is a bar owner and would like to determine an ordering policy for beers. He wants to use an (I, S) policy where

2. Richie is a bar owner and would like to determine an ordering policy for beers. He wants to use an (I, S) policy where he checks the inventory every week (I=1 week). According to the past data he collected, the following Table shows possible demand values for beer and the probability of observing this demand in one week.

The unit cost of beer is $2 per bottle, the price of beer is $4 per bottle and Richie pays $30 for collecting beers from the distributor every time he gives a new order. He estimates the holding cost as 20% per year. a) Compute the service level when Richie uses an inventory policy (I, S) where I=1 week and S = 220 bottles. Also compute the service level when S= 260 bottles. b) Compute the average size of an order in each case (i.e. when S=220 and when S= 260). In each case, how much inventory does Richie carry in each replenishment cycle on average? (avg inventory = Q/2 + ss, ss =S -Q, where Q = average order size) Compute the total cost of expected (inventory holding) + (stockout cost) in each case. Which of the two order-up-to levels, S=220 or S=260, makes more sense from a cost minimization perspective? (Hint: Stockout cost = Expected Profit lost. Compute the expected number of people who cannot get beer in each case, and compute the profit lost accordingly.) What do you advise Richie to do?13:22

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