Answered: DUE DATE (DAYS) DURATION (DAYS…

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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Related questions

Question

Kamauf Custom Glass, Inc., manufactures custom windows primarily for homes and churches. Small repair jobs
may take a few hours, but larger jobs may take hundreds of
hours. How to schedule the jobs is a continuing issue. The scheduler
has decided to see what insight can be gained by examining
some common sequencing rules, namely FCFS, EDD, SPT, and
LPT, on the criteria of average completion (flow) time, average
lateness, and average number of jobs in the system. Her sample
is the six jobs on the scheduler's desk Monday morning. Assume
that all jobs on the scheduler's desk arrived today (day 100, which
is a workday) in the order shown below. The estimated times to
complete the jobs and their due dates are noted. a) Sequence the jobs according to the following decision rules:
FCFS, EDD, SPT, and LPT.
b) For the FCFS sequence, compute the average completion
(flow) t ime, average lateness, and average number of jobs in the system.
c) For the EDD sequence, compute the average completion (flow) time, average lateness, and average number of jobs in the system.
d) For the SPT sequence, compute the average completion (flow) time, average lateness, and average number of jobs in the system.
e) For the LPT sequence, compute the average completion (flow) time, average lateness, and average number of jobs in the system.
f) Which is the best decision rule based on average completion (flow) time?
g) Which is the best decision rule based on average lateness?