The owner/operator of the local franchise of Handyman,Inc., has four jobs to do today, shown in the order theywere received:JobWXYZProcessingTime (hrs)4321Multiple ChoiceIf he uses the shortest processing time first priority rule toschedule these jobs, what will be the average completiontime?O7.5 hours5 hours3 hours2.5 hoursDue(hrs from now)42 hours521

Let me state the given data, JobProcessing timeDue hours from nowZ14Y25X32W41Here, the first…

Answered: If he uses the shortest processing time…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section: Chapter Questions

Problem 59P

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state whether or not each situation would be considered “compensable time” (and why or why not). An employee of a fast food chain has to arrive at work 15 minutes early to change into the“mascot” costume and it typically takes another 15 minutes at the end of the shift to change outof the costume and properly store it. Due to the cost of the costume, employees are notallowed to take the costume home. The “mascots” typically work from 10am – 2pm, to coverthe lunch rush periods. How much time would be “compensable” for the mascots, assumingthe conditions/schedule listed above?2) George is a Radiology Technician at a local hospital and when on call, is required to be nofurther than 30 minutes away from the facility. Is the “on call” time, compensable?
The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received: Job W X Y Z Processing Time (hrs) 4 3 2 1 If he uses the shortest processing time first priority rule to schedule these jobs, what will be the average number of jobs in his shop today? Multiple Choice 0 1 2 3 Due (hrs from now) 4 5 2 1 4
Currently a company that designs Web sites has six customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 6 18 48 B 4 22 52 C 1 30 70 D 10 14 28 E 7 12 56 F 5 20 62 Develop a schedule by using the first-come, first-served (FCFS) rule and calculate the average flow time and average days past due for the schedule. Develop a schedule by using the earliest due date (EDD) rule and calculate the average flow time and average days past due for the schedule. Comment on the performance of the FCFS and EDD rules relative to average flow time and average days past due.
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. Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) Job CR Job Due Date Duration (days) 103 103 214 10 205 205 223 309 309 217 11 412 219 412 517 216 15 517 Assume that all jobs arrived on day 180; today's date is 200.
Diablo Electronics manufactures four unique products (A, B, C, and D) that are fabricated and assembledin five different workstations (V, W, X, Y, and Z) using a small batch process. Each workstation is staffedby a worker who is dedicated to work a single shift per day at an assigned workstation. Batch setuptimes have been reduced to such an extent that they can be considered negligible. A flowchart denotesthe path each product follows through the manufacturing process as shown in Figure 5.2, where eachproduct’s price, demand per week, and processing times per unit are indicated as well. Inverted trianglesrepresent purchased parts and raw materials consumed per unit at different workstations. Diablo canmake and sell up to the limit of its demand per week, and no penalties are incurred for not being able tomeet all the demand.Which of the five workstations (V, W, X, Y, or Z) has the highest utilization, and thus serves as the bottle-neck for Diablo Electronics?
What are the advantages and disadvantages of the shortest processing time (SPT) rule?
TABLE 18.21 Processing Time for Eight Projects, Displayed in the Sequence They Arrived Project P1 P2 P3 Р4 P5 P6 P7 P8 Processing time (hours) 4 1 0.5 2 3 6 1 ..... 1. Given the projects displayed in Table 18.21, if FCFS is used to sequence the jobs, what is the average flow time of the projects (in hours)? 2. Given the projects displayed in Table 18.21, if SPT is used to sequence the jobs, what is the average flow time of the projects (in hours)?
Ann Elkin, who works for Brill Co. has been sent out to conduct two customer evaluations, which have gone much more quickly than Ann anticipated. Her supervisor does not expect Ann back until alter lunch. It Is now 10:30 A.M., and Ann would like to run some personal errands and then go to lunch before returningto work at 1:00P.M. Should Ann take the time? Would you? Why or why not? Is this any different than if Ann was sitting at her office desk using a work computer to access her personal email, surf the internet, check social media or make personal phone calls on her work phone?
To control queue and make deadlines, two things are essential: must schedule and plan carefully , what are these ?
Courtney is a programmer receiving requests each week to analyze a large data base. Five jobs were on her desk Monday morning, and she must decide in what order to write the code Assume that all jobs arrived today (day 1 and hour 1), in the order shown below. Courtney has assigned the number of hours required to do the coding as noted. Note that Courtney works an 8-hour day and today is a work day. DURATION (HOURS JOB k A BUD C E DUE DATE (HOURS HENCE) 10 16 14 36 26 REQUIRED) 6 3 7 15 8 a) Sequence the jobs according to EDD. According to the EDD rule, the sequence of jobs should be A, C, B, E, D b) What is the average completion (flow) time? The average completion (flow) time is days (round your response to one decimal place).
Given the following information on job times and due dates. Job Job Time(Hours) Due Date(Hours) a 3.5 7 b 2.0 6 c 4.5 18 d 5.0 22 e 2.5 4 f 6.0 20 a-1. Determine the optimal processing sequence using (1) First come, first served, (2) Shortest processing time, (3) Earliest due date, and (4) Critical ratio. Sequence for First come, first served Sequence for Shortest processing time Sequence for Earliest due date Sequence for Critical ratio a-2. For each method, find the average job flow time and the average job tardiness. (Round your answers to 2 decimal places.) First Come, FirstServed Shortest ProcessingTime Earliest Due Date Critical Ratio Average flow time Average job tardiness
Courtney is a programmer receiving requests each week to analyze a large data base. Five jobs were on her desk Monday morning, and she must decide in what order to write the code. Assume that all jobs arrived today (day 1 and hour 1), in the order shown below. Courtney has assigned the number of hours required to do the coding as noted. Note that Courtney works an 8-hour day and today is a work day. JOB DUE DATE (HOURS HENCE) 18 36 10 22 14 E a) Sequence the jobs according to EDD. According to the EDD rule, the sequence of jobs should be b) What is the average completion (flow) time? The average completion (flow) time is c) What is the average job lateness? The average job lateness is d) What is the average number of jobs in the system? The average number of jobs in the system is place). DURATION (HOURS REQUIRED) 3 19 4 9 5 days (round your response to one decimal place) days (round your response to one decimal place). jobs (round your response to one decimal

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If he uses the shortest processing time first priority rule to schedule these jobs, what will be the average completion time?