Concept explainers
(a)
Interpretation:The mean flow time, average tardiness and number of tardy jobs are to be determined for the given data (problem 7).
Concept Introduction:
The following formula will be used −
(b)
Interpretation:The mean flow time, average tardiness and number of tardy jobs are to be determined for the given data (problem 8).
Concept Introduction:
The following formula will be used −
(c)
Interpretation: The mean flow time, average tardiness and number of tardy jobs are to be determined for the given data
Concept Introduction:
The following formula will be used −
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Production and Operations Analysis, Seventh Edition
- 20 ______ are high-volume product processes that typically produce standardized products and require identical or similar operations. a Line processes b Intermittent processes c Machine processes d Outlier processes 21 ______ is concerned with regulating inputs to a work center in relation to output and available capacity so that the queues and waiting times of jobs can be managed and kept under control. a Input control b Input-output control c Process control d Capacity control 22 ______ is a method applied to situations in which various resources must be allocated to activities on a one-to-one basis. a Time-series method b Assignment method c Integer programming d Linear analysisarrow_forwardWhat is the relationship between the processing time at a resource and its capacity?a. They are the same.b. They are reciprocals of each other.c. They are multiples of each other.d. They are not related.arrow_forwardCalculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) Job CR 103 enter your response here Part 2 205 enter your response here Part 3 309 enter your response here Part 4 412 enter your response here Part 5 517 enter your response here ... Question content area right Part 1 The following 5 overhaul jobs are waiting to be processed at Avianic's Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days. Job Due Date Duration (days) 103 223 7 205 217 11 309 219 5 412 218 15 517 214 10 Assume that all jobs arrived on day 180; today's date is 200.arrow_forward
- Which of the following statements best represents a concise definition of an operations process? It is a conversion activity that Select one: a. involves technical analysis b. involves workers and equipment c. transforms inputs to outputs d. produces competitive advantage for the firm Which of the following situations will tend to increase customer dissatisfaction with waiting in line the most? Select one: a. Large numbers of customers b. The physical location of an operation c. Bright lights in the banking hall d. Idle workers in the view of customersarrow_forwardSuppose you have a process that requires 20 minutes for start up, 13 minutes for Task #1, 15 minutes for Task #2, and 18 minutes for Task #3. Which of the following is true? Group of answer choices This process has one or more tasks that are blocking other tasks. None of these answers is correct This process has one or more tasks that are starving other tasks. This process has one or more tasks that are multi-staging other tasks. This process has one or more tasks that are buffering other tasks.arrow_forward67. The number of resources requested by a process : a. must always be less than the total number of resources available in the system b. must always be equal to the total number of resources available in the system c. must not exceed the total number of resources available in the system d. must exceed the total number of resources available in the systemarrow_forward
- Before completing production, a product must passthrough three stages of production. On the average, a newproduct begins at stage 1 every 6 minutes. The average timeit takes to process the product at each stage is as follows:stage 1, 3 minutes; stage 2, 2 minutes; stage 3, 1 minute.After finishing at stage 3, the product is inspected (assumethis takes no time). Ten percent of the final products arefound to have a defective part and must return to stage 1 andgo through the entire system again. After completing stage3, 20% of the final products are found to be defective. Theymust return to stage 2 and pass through 2 and 3 again. Onthe average, how many jobs are in the system? Assume thatall interarrival times and service times are exponential andthat each stage consists of a single server.arrow_forwardWe measure, monitor and improve process cycle time because: a. It is an easy measurement to make *b. Increasing cycle time helps us improve the capacity of the process and reduce costs c. Everyone understands cycle time d. Customers are interested in how long it takes to make a product e. All of the above f. None of the abovearrow_forwardTotal customer-response time (CRT) can be defined as which of the following? (Hint: Refer to textExhibit 14.14 and the accompanying discussion.)a. The difference between when a customer’s order is set up and when the order is finishedb. The elapsed time between when a customer places an order for a product and when that order isdelivered to the customerc. Manufacturing lead (cycle) time for the orderd. The time between when an order is received by manufacturing and when that order is completedarrow_forward
- Consider a process consisting of three resources. Assume there exists unlimited demand for the product. Resource 1 has a processing time of 4 minutes per unit. Resource 2 has a processing time of 7 minutes per unit. Resource 3 has a processing time of 5 minutes per unit.arrow_forwardClients are served in a process with two resources. The processing time of the first resource is 6 minutes. The processing time of the second resource is 6 minutes. The first resource has 9 worker and the second resource has 5 workers. The cycle time of the process is 11.8 minutes. Instruction: Round your answer to one decimal place. What is the average labor utilization (%)? percent ation CRook Airarrow_forwardThese are not graded questions as they are revision questions from my textbookarrow_forward
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