In a P system, the lead time for a box of weed-killer is two weeks and the review period is one week. Demand during the protection interval averages 239 boxes, with a standard deviation of demand during the protection interval of 50 boxes. a. What is the cycle-service level when the target inventory is set at 250 boxes? Refer to the standard normal table as needed. The cycle-service level is %. (Enter your response rounded to two decimal places.) b.) In the fall season, demand for weed killer decreases but also becomes more variable. Assume demand during the protection interval is expected to decrease to 180 boxes, but with a standard deviation of 50 boxes. What would be the cycle-service level if management keeps the target inventory level set at 300 boxes