(s, S) for Refrigerators) Weekly demand for refrigerators at an appliance store has a Poisson...

(s, S) for Refrigerators) Weekly demand for refrigerators at an appliance store has a Poisson distribution with a mean of 4. The holding and stock out cost for refrigerators at the store are h = $40 and p = $125 per week, respectively. Replenishment orders for refrigerators incur a fixed cost of K = $150. a) Suppose we set (s, S) = (4, 10). What is the expected cost per week? b) Using Algorithm 4.2, find the optimal parameters (s, S), and the corresponding optimal cost