6. Anvils Works' requires, on average, 2500 tons of aluminum each week, with a standard deviation of 1000 tons. The lead time to reseive its orders is 10 weeks. The holding cost for one toa of aluminum for one week is $11. It operates with a 0.98 instock probability. a. On average, how many tons does it have on order? [LO11-5] [L. b. Oa average, how many tons does it have on hand?] [LO11-5] c. If its average inventory was 5000 tons, what woild be its avernee holding coit per week? [G9 [LO11.5] d. If its average inventory was 10,000 tons, what would be its average holding cost per ton of aluminum? ( [LO11-5] c. Suppose its on-hand imventory is 4975 tons, on average. What in-stosk probability does it offer to its customers? (G) [LO11-5]