can you please show all steps

Probiem 4. Problem 5. One of the largest selling items in J.C. Ward's Department Store is a new model of refrig- erator that is highly energy-efcient. About 80 of these refrigerators are being sold per month. It takes about a week for the store to obtain more refrigerators from a wholesaler. The demand during this time has a uniform distribution between 10 and 30. The adminis- trative cost of placing each order is $100. For each refrigerator, the holding cost per month is $15 and the shortage cost per month is estimated to be $3. The store's inventory manager has decided to use the stochastic continuous-review model, with a service level (measure 1) of 0.8, to determine an [R,Q) policy. (a) Determine R and Q. (b) What will be the average number of stockouts per year with this inventory policy? A newspaper stand purchases newspapers for $0.55 and sells them for $0.75. The short- age cost is $0.75 per newspaper (because the dealer buys papers at retail price to satisfy shortages). The holding cost is $0.01 per newspaper left at the end of the day. The de mand distribution is a uniform distribution between 50 and 75. Find the optimal number of papers to buy