Part 2

The average tardiness (job lateness) for the sequence developed using the FCFS rule =

Average job lateness=Total late daysNumber of jobs

=

days (round your response to two decimal places).

Part 3

The percentage utilization for the sequence developed using the FCFS rule =

Utilization=Total job work (processing) timeSum of total flow time

=

(enter your response as a percentage rounded to two decimal places).

Part 4

The average completion time (flow time) for the sequence developed using the FCFS rule =

Average completion time=Sum of total flow time Number of jobs

=

days (round your response to two decimal places).

Part 5

The average number of jobs in the system for the sequence developed using the FCFS rule =

Average number of jobs in system=Sum of total flow timeTotal job work (processing) time

=

jobs (round your response to two decimal places).

Part 6

Using the EDD (earliest due date) decision rule for sequencing the jobs, the order is (to resolve a tie, use the order in which the jobs were received):

Under the EDD rule, jobs are scheduled in the order in which they due. Arrange the due dates in ascending order to perform the scheduling. The ordered due dates are

The average tardiness (job lateness) for the sequence developed using the EDD rule =

days (round your response to two decimal places).

Part 8

The percentage utilization for the sequence developed using the EDD rule =

(enter your response as a percentage rounded to two decimal places).

Part 9

The average completion time (flow time) for the sequence developed using the EDD rule =

Average completion time=Sum of total flow time Number of jobs

=

days (round your response to two decimal places).

Part 10

The average number of jobs in the system for the sequence developed using the EDD rule =

Average number of jobs in system=Sum of total flow timeTotal job work (processing) time

=

jobs (round your response to two decimal places).

Part 11

Using the SPT (shortest processing time) decision rule for sequencing the jobs, the order is (to resolve a tie, use the order in which the jobs were received):

Under the SPT rule, jobs are scheduled based on the ordering of the processing time with the shortest one first. Arrange the processing times in ascending order to perform the scheduling. The ordered processing times are

Part 12

The average tardiness (job lateness) for the sequence developed using the SPT rule =

days (round your response to two decimal places).

Part 13

The percentage utilization for the sequence developed using the SPT rule =

(enter your response as a percentage rounded to two decimal places).

Part 14

The average completion time (flow time) for the sequence developed using the SPT rule =

Average completion time=Sum of total flow time Number of jobs

=

days (round your response to two decimal places).

Part 15

The average number of jobs in the system for the sequence developed using the SPT rule =

Average number of jobs in system=Sum of total flow timeTotal job work (processing) time

=

jobs (round your response to two decimal places).

Part 16

Using the LPT (longest processing time) decision rule for sequencing the jobs, the order is (to resolve a tie, use the order in which the jobs were received):

Under the LPT rule, jobs are scheduled based on the ordering of the processing time with the longest one first. Arrange the processing times in descending order to perform the scheduling. The ordered processing times are

Part 17

The average tardiness (job lateness) for the sequence developed using the LPT rule =

Average job lateness=Total late daysNumber of jobs

=

days (round your response to two decimal places).

Part 18

The percentage utilization for the sequence developed using the LPT rule =

Utilization=Total job work (processing) timeSum of total flow time

=

(enter your response as a percentage rounded to two decimal places).

Part 19

The average completion time (flow time) for the sequence developed using the LPT rule =

Average completion time=Sum of total flow time Number of jobs

=

days (round your response to two decimal places).

Part 20

The average number of jobs in the system for the sequence developed using the LPT rule =

Average number of jobs in system=Sum of total flow timeTotal job work (processing) time

=

jobs (round your response to two decimal places).

Part 21

Critical Ratio (CR) for each job is given by the relationship:

CR=Due DateDate TodayProcessing Time.

Based on the given information, the CR for Job

A

=

(round your response to two decimal places).

Part 22

CR for Job

B

=

(round your response to two decimal places).

Part 23

CR for Job

C

=

(round your response to two decimal places).

Part 24

CR for Job

D

=

(round your response to two decimal places).

Part 25

CR for Job

E

=

(round your response to two decimal places).

a) Using the FCFS (first come, first served) decision rule for sequencing the jobs, the order An Alabama lumberyard has four jobs on order, as shown in the following table. Today is is (assume that jobs came in the order in which they are listed in the table): day 205 on the yard's schedule. In what sequence would the jobs be ranked according to the decision rules on the left: All dates are specified as manufacturing planning calendar days. Assume that all jobs The average tardiness (job lateness) for the sequence developed using the FCFS rule = days arrive on day 205 . Compute all times based on initiating work on day 205 . (round your response to two decimal places)