I only need help with part e.

2 PA 11-6 (Algo) Anvil's Works requires on average... 10 points Anvils Works' requires, on average, 2,800 tons of aluminum each week, with a standard deviation of 1,200 tons. The lead time to receive its orders is 9 weeks. The holding cost for one ton of aluminum for one week is $10. It operates with a 0.99 in-stock probability. Use Table 11.5. Answer is complete but not entirely correct. (Round your answer to nearest integer.) On average, how many tons does it have on order? a. 25,200 tons (Round your answer to nearest integer.) On average, how many tons does it have on hand? b. 8,842 tons (Round your answer to nearest integer.) If its average inventory was 7,500 tons, what would be its average holding cost per week? c. $ 75,000 per week (Round your answer to 2 decimal places.) If its average inventory was 12,000 tons, what would be its average holding cost per ton of aluminum? d. $ 42.86 per ton (Round your answer to 4 decimal places.) Suppose its on-hand inventory is 5,125 tons, on average. What in-stock probability does it offer to its customers? 1.3506