EXAMEN BASIC OPERATIONS FINAL

Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is presented in the table below. Each job requires work center Alpha before work center Beta. According to Johnson's rule, which job should be performed first in the schedule?. 1. 3. 2. 4.

A manager wants to establish 2-sigma x-bar control limits for a process. The mean of the process is 22 units, and the standard deviation of the process is 8. If samples of size 16 are to be taken, what will be the upper and lower control limits, respectively?. 18 and 26. 15 and 25. 14 and 26. 16 and 24.

The jobs Iisted below need to be completed. Assume that it is now day 1 and work will begin today. If the jobs are sequenced according to the longest processing time rule, what is the lateness of job A?. 10 days. 15 days. 20 days. 5 days.

Which of the following is an advantage of the FCFS sequencing rule when used in services?. FCFS seems fair to customers. FCFS maximizes the number of jobs completed on time. FCFS minimizes the average number of jobs in the system. FCFS minimizes the average lateness of all jobs.

Which of the following statements is true regarding the benefit of supply chain savings?. As the firm's net profit margin decreases, Supply Chain savings yield more benefit. Supply Chain benefit depends only upon the percent of sales spent in the Supply Chain. As the firm's purchases are a larger percent of sales, Supply Chain savings yield less benefits. Supply Chain savings yield about the same as benefit as that that can be gained from sales.

What is the priority rule that sequences jobs by the smallest proportion of time left from today to processing time?. first come, first served. shortest processing time. critical ratio. earliest due date.

The number of late restaurant meals sent back to the kitchen per 100 should be monitored with what type of control chart?. R-chart. p-chart. c-chart. x-bar chart.

The two basic inventory parameters that make up an Inventory Management policy are: order quantity and service level. timing of orders and order quantity. order quantity and cost of orders. timing of orders and cost of orders.

A restaurant runs a special promotion on quail and plans to sell twice as many quails as usual. When this large order is sent to the distributor, the distributor assumes the large size is a trend, not a one-time event. The distributor therefore places an even larger order with the farmer. This behavior is the result of which of the following?. the bullwhip effect. cyclial demand. postponement. vendor-managed inventory.

"Quality Is Free," because: Ensuring high quality is costless. Failure costs are not borne by the manufacture?. Prevention & Appraisal costs are usually lower than Failure costs. Customers do not have to pay for high quality.

Forward scheduling sequences: products according to their profit contributions. the end items or finished products first and then their components. the final operation first beginning with the due date. jobs as soon as they arrive and it's known what the requirements are.

Which cost of quality is usually most difficult to accurately estimate?. appraisal costs. external failure costs. prevention costs. internal failure costs.

Characteristics of just-in-time partnerships do NOT include: offshoring to reduce transit time and cost. focus on core competencies. long-term contracts. small lot sizes to save on inventory costs.

What is indicated by a high process capability index Cpk?. A relatively large distance between the lower control limit (LCL) and upper control limits (UCL). More units meet specifications. High risk of external failure costs. High process variability.

At Urgent Care, lead time for arm-slings is 2 days with daily demand of 16 slings and a safety stock of ½ a day. Each container (kanban) holds 5 slings. What is the correct number of kanbans?. 5. 6. 8. 7.

Which of the following is generally NOT a reason for a company to carry inventories?. to separate the firm from fluctuations in that demand. to decouple various parts of the production process. to hedge against price increases. to minimize holding costs.

Which of the following statements about the basic EOQ model is TRUE?. If annual demand were to double, the EOQ would increase. If the holding cost were to increase, the EQ would increase. if the ordering cost were to double, the EQ would double. if ordering cost were to decrease, the EQ would increase.

If you goal is to perform a one-to-one matching of jobs to resources, what scheduling method should you use?. the Assignment Method. Johnson's Rule. Backward Scheduling. Forward Scheduling.

ABC analysis is assumes that: an item is critical if its usage is high. more time should be spent on class "C" items because there are many more of them. relatively few items in inventory are critical, and most of the other items are less critical. all items in inventory must be monitored very closely.

Which of the following is not a typical inspection point?. when production or service is complete. after about 80% of the process has been completed. before a costly process. before the product is shipped to the customer.

If a sample of items is taken and the sample average is below the lower control limits, the process is: in control, but not capable of producing within the established control limits. producing better than standard quality products. within the established control limits with only natural causes of variation. likely out of control and the cause should be investigated.

Which of the following is not an effectiveness criterion for scheduling?. minimizing flow time. minimizing utilization. minimizing customer waiting time. minimizing completion time.

Which of the following statements regarding a pull system is TRUE?. Large lots are pulled from upstream stations. Work is pulled to the downstream stations before it is actually needed. Manufacturing cycle time is decreased. Problems become less obvious.

Consider a firm with an annual net income of $20 million, revenue of $60 million and cost of goods sold of $20 million. If the balance sheet amounts show $2 million of Inventory and $1 million of property, plant & equipment, what is the inventory turnover?. 10. 15. 25. 20.