Avon Barksdale's operation uses large quantities of prepaid cell phones, on average 500 per week with a standard deviation of 45. The lead time for their own brand of prepaid cell phones is two weeks and they have a lot size of 125 phones

21) What is the standard deviation of demand during their lead time? A) 45 phones B) 64 phones C) 90 phones D) 109 phones

22) Suppose Mr. Barksdale sets his reorder point at 1100 phones. What is his average cell phone inventory? A) 87.5 phones B) 105 phones C) 162.5 phones D) 257.5 phones

23) What is the average flow time of a phone if the reorder point used by Mr. Barksdale is 2000 phones? A) 1.74 weeks B) 1.87 weeks C) 2.00 weeks D) 2.13 weeks

Emery pharmaceutical uses an unstable chemical compound that must be kept in an environment where both temperature and humidity can be controlled. emery uses 825 pounds per month of the chemical, estimates the holding cost to be 50% of the purchase price (because of spoilage), and estimates order costs to be $48 per order. the cost schedules of two suppliers are as follows: vendor 1 vendor 2 quantity price/lb quantity price/lb 1-499 $17 1-399 $17.10 500-999 $16.75 400-799 $16.85 1000+ $16.50 800-1199 $16.60 1200+ $16.25 (a) what is the economic order quantity for each supplier? (b) what quantity should be ordered and which supplier should be used? (c) the total cost for the most economic order sire is $