Consider the following four-step assembly operation with quality problems. All resources are staffed by one employee.. The first resource has a processing time of 5 minutes per unit.. The second resource has a processing time of 6 minutes per unit.. The third resource has a processing time of 3 minutes per unit. With a 30 percent probability, the flow unit coming out of the thirdresource has to be reworked. In that case, the operations at the first, second, and third resources are repeated. You can assumethat (a) rework always succeeds (.e., a unit going through the rework loop will always work after the third resource) and (b) theprocessing times for units in rework are the same as for regular units.• The fourth resource has a processing time of 4 minutes per unit.a. Where in the process is the bottleneck?O Step 1O Step 2Step 3Sten 4 a. Where in the process is the bottleneck?O Step 1O Step 2Step 3O Step 4b. What is the capacity of the process?Note: Round your answers to 2 decimal places.Capacity20.00 good units per hour

Answered: a. Where in the process is the…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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. Consider the following four-step assembly operation with quality problems. Allresources are staffed by one employee.• The first resource has a processing time of 5 minutes per unit.• The second resource has a processing time of 6 minutes per unit.• The third resource has a processing time of 3 minutes per unit. With a 30 percent probability, the flow unit coming out of the third resource has to be reworked. In that case,the operations at the first, second, and third resources are repeated. You can assumethat (a) rework always succeeds (i.e., a unit going through the rework loop will alwayswork after the third resource) and (b) the processing times for units in rework are thesame as for regular units.• The fourth resource has a processing time of 4 minutes per unit.a. Where in the process is the bottleneck?b. What is the capacity of the process?
You are sitting in a restaurant and the waiter brings you the food you ordered a whileago. If you think about you being the flow unit in the process of the restaurant, whichstep of this process will be downstream relative to your current position in the process?a. Waiting to orderb. Being seated at a tablec. Paying the billd. Reviewing the menu
Consider the following four-step assembly operation with quality problems. All resources are staffed by one employee. • The first resource has a processing time of 5 minutes per unit. • The second resource has a processing time of 6 minutes per unit. • The third resource has a processing time of 3 minutes per unit. With a 30 percent probability, the flow unit coming out of the third resource has to be reworked. In that case, the operations at the first, second, and third resources are repeated. You can assume that (a) rework always succeeds (i.e., a unit going through the rework loop will always work after the third resource) and (b) the processing times for units in rework are the same as for regular units. • The fourth resource has a processing time of 4 minutes per unit. With this information in hand, answer the following questions: • What is the bottleneck process? • What is the capacity of the process?
A catalog order-filling process can be described as follows:12 Telephone orders are taken over a 12-hour period each day. Orders are collected from each person at the end of the day and checked for errors by the supervisor of the phone department, usually the following morning. The supervisor does not send each one-day batch of orders to the data processing department until after 1:00 p.m. In the next step—data processing—orders are invoiced in the one-day batches. Then they are printed and matched back to the original orders. At this point, if the order is from a new customer, it is sent to the person who did the customer verification and setup of new customer accounts. This process must be completed before the order can be invoiced. The next step—order verification and proofreading—occurs after invoicing is completed. The orders, with invoices attached, are given to a person who verifies that all required information is present and correct to permit typesetting. If the verifier has…
A cell-phone repair shop consists of three processes. Step 1 requires 4 minutes per unit, step 2 requires 6 minutes per unit and step 3 requires 2 minutes per unit. 40% of units that complete the third step require rework, which means those units must start the process over at step 2 (processing times are the same for units being reworked) and rework is always successful. Demand at the shop is 0.8 units per minute. Instruction: Round your answer to three decimal places. What is the capacity of the shop (in units per units per minute)? units per minute
Consider a production line with five stations in serial. The stations have the following process times in minutes (or minutes/unit). Station 1's process time is 9 minutes/unit. Station 2's process time is 10 minutes/unit. Station three has two identical machines, each of which process a unit in 12 minutes (each unit only needs to be processed on one of the two machines). Station 4's process time is 5 minutes/unit. Station 5's process time is 8 minutes/unit. Which station is the bottleneck station? a) Station 3 b) None of the other options c) Station 2 d) Station 5
Three employees at a fast-food restaurant each perform one of the three activities in serving a customer: take the order, process the order, and deliver the order. The processing time for each activity is given as follows: Activity Processing Time Take the order 30 seconds Process the order 2 minutes Deliver the order 1 minute Assume that the demand is 20 customers/hour. What is the average labor utilization? a 38.9% b 85.7% c 66.7% d 100%
Which of the following statements is true? In a factory operating at capacity, every machine and person should be working at the maximum possible rate. One way to increase the effective utilization of a bottleneck is to reduce the number of defective units.
The production process shown below consists of five stages. The numbers in parentheses are the times in minutes to complete one unit before it moves on to the next stage. The demand rate is 46 units per hour. 2 workers workers workers Stage A (4 workers Stage B (3) a. How many workers are needed at each stage if management wants a utilization of at least 90 percent? Round your answers down to the nearest whole number. Stage A: workers Stage B: Stage C: Stage D: Stage E: Stage C (6) Stage D (5 Stage E (4
. Consider the following three-step assembly operation with quality problems. Allresources are staffed by one employee.• The first resource has a processing time of 7 minutes per unit.• The second resource has a processing time of 6 minutes per unit.• The third resource has a processing time of 5 minutes per unit. With a 40 percentprobability, the flow unit coming out of the third resource has to be reworked. In thatcase, the operations at the second and third resources are repeated. You can assumethat (a) rework always succeeds (i.e., a unit going through the rework loop willalways work after the third resource) and (b) the processing times for units in reworkare the same as for regular units.Where in the process is the bottleneck? What is the capacity of the process?
Consider the following batch flow process consisting of three process steps performed by three machines. What is the capacity of the process given the following information? Batch size = 50 parts Step 1 - Processing Time = 1 minute/part; Setup time = 20 minutes Step 2 - Processing Time = 2 minute/part; Setup time = no setup Step 3 - Processing Time = 1.5 minute/part; Setup time = no setup Your answer provided to me was 1.881 parts per minute (which also equals 112.8 parts per hour). I understand how you arrived at such answer. However, per my professor's answer key, states an answer of 30 units per hours (which could be wrong and I want to confirm), but my question is - is there any way the answer could be 30 units per hour? Thank you!
Consider the following three-step assembly operation with quality problems. All resources are staffed by one employee. The first resource has a processing time of 7 minutes per unit. The second resource has a processing time of 6 minutes per unit. The third resource has a processing time of 5 minutes per unit. With a 40% probability, the flow unit coming out of the third resource has to be reworked. In that case, the operations at the second and third resources are repeated. You can assume that (a) rework always succeeds (i.e. a unit going through the rework loop will always work after the third resource),and (b) the processing times for units in rework are the same as for regular units. Where in the process is the bottleneck? 1 point Step 3 Step 2 Step 1 5.Question 5

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a. Where in the process is the bottleneck? O Step 1 O Step 2 Step 3 O Step 4 b. What is the capacity of the process? Note: Round your answers to 2 decimal places. Capacity 20.00 good units per hour 4