A kitchen installer uses a mean of 145 boxes of door handles per day with a standard deviation of 30. The handles cost $240 per box plus $1920 per delivery. The storage space costs $0.16 per box per day. The installer normally orders handles every 13 days and they take 3 to be delivered. The installer aims for a service cycle level of 0.85. a) How many boxes of door handles should be ordered if there are 799 boxes in storage? b) The accountant for the kitchen installer discovers that the sizes of the deliveries of door handles are all different and decides to institute a system with uniform delivery sizes. How many boxes of handles should be ordered for each delivery? c) Under the new system the accountant counts how many boxes of door handles are in the store room each morning. If there are not enough in the storage then he places an order. How many boxes is enough? All answers should be to the nearest box. A company began to make credit available to its customers in January. The following data has been collected from its Accounts Receivable records: Invoices issued for goods sold in January $139769 Settlements in January for invoices issued in January $13087 Invoices issued for goods sold in February $134125 Settlements in February for invoices issued in January $66068 Settlements in February for invoices issued in February Invoices issued for goods sold in March Settlements in March for invoices issued in January Sale of remaining January debts to debt collector Settlements in March for invoices issued in February Settlements in March for invoices issued in March Invoices issued for goods sold in April Settlements in April for invoices issued in February Sale of remaining February debts to debt collector Settlements in April for invoices issued in March Settlements in April for invoices issued in April Invoices issued for goods sold in May Settlements in May for invoices issued in March Sale of remaining March debts to debt collector Settlements in May for invoices issued in April Settlements in May for invoices issued in May Invoices issued for goods sold in June Settlements in June for invoices issued in April Sale of remaining April debts to debt collector Settlements in June for invoices issued in May Settlements in June for invoices issued in June $14212 $139315 $27061 $19506 $63791 $11903 $137115 $22488 $18457 $79294 $11109 $140609 $21790 $10872 $69834 $13490 $123799 $29210 $10082 $77166 $10168