7 Anvils Works' requires, on average, 2,500 tons of aluminum each week, with a standard deviation of 800 tons. The lead time to receive its orders is 8 weeks. The holding cost for one ton of aluminum for one week is $8. It operates with a 0.99 in-stock probability. a. On average, how many tons does it have on order? ANSWER (Round your answer to nearest integer.) b. On average, how many tons does it have on hand? ANSWER (Round your answer to nearest integer.) c. If its average inventory was 5,000 tons, what would be its average holding cost per week? ANSWER (Round your answer to 2 decimal places.) d. If its average inventory was 10,000 tons, what would be its average holding cost per ton of aluminum? ANSWER