Based on information from a large insurance company, 67% of all damage liability claims are made by single people under the age of 25. a random sample of 54 claims showed that 42 were made by single people under the age of 25. does this indicate that the insurance claims of single people under the age of 25 is higher than the national percent reported by the large insurance company? give the test statistic and your conclusion.

An allergy products superstore buys 6000 of their most popular model of air filters each year. the price of the air filters is $18. the cost of ordering and receiving shipments is $12 per order. accounting estimates annual carrying costs are 20% of the price. the supplier lead time is 2 days. the store operates 240 days per year. each order is received from the supplier in a single delivery. there are no quantity discounts. what is the store’s minimum total annual cost of placing orders & carrying inventory?