a) Using the FCFS (first come, first served) decision rule for sequencing the jobs, the order is (assume that jobs came in the order in which they are listed in the table): Sequence 1 2 3 4 Sequence 1 2 Job The average tardiness (job lateness) for the sequence developed using the FCFS rule=days (round your response to two decimal places). The average completion time (flow time) for the sequence developed using the FCFS rule=days (round your response to two decimal places) The percentage utilization for the sequence developed using the FCFS rule=% (enter your response as a percentage rounded to two decimal places). 3 V b) 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): 4 ▼ Job ▼ V ▼ T The average tardiness (job lateness) for the sequence developed using the SPT rule = days (round your response to two decimal places). An Alabama lumberyard has four jobs on order, as shown in the following table. Today is day 205 on the yard's schedule. In what sequence would the jobs be ranked according to the decision rules on the left Job A B с D Due Date 208 210 209 212 Duration (days) 8 5 All dates are specified as manufacturing planning calendar days. Assume that all jobs arrive on day 205. Compute all times based on initiating wo on day 205.
a) Using the FCFS (first come, first served) decision rule for sequencing the jobs, the order is (assume that jobs came in the order in which they are listed in the table):
Sequence
Job
1
▼
D
A
C
B
Part 2
2
▼
B
C
D
A
Part 3
3
▼
A
D
C
B
Part 4
4
▼
A
C
B
D
Part 5
The average tardiness (job lateness) for the sequence developed using the FCFS rule =
enter your response here days (round your response to two decimal places).
Part 6
The average completion time (flow time) for the sequence developed using the FCFS rule =
days (round your response to two decimal places).
The percentage utilization for the sequence developed using the FCFS rule =
% (enter your response as a percentage rounded to two decimal places).
Part 8
b) 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):
Sequence
Job
1
▼
A
D
B
C
2
▼
D
B
A
C
3
▼
C
A
B
D
4
▼
A
B
C
D
The average tardiness (job lateness) for the sequence developed using the SPT rule =
days (round your response to two decimal places).
The average completion time (flow time) for the sequence developed using the SPT rule =
days (round your response to two decimal places).
The percentage utilization for the sequence developed using the SPT rule =
% (enter your response as a percentage rounded to two decimal places).
Part 15
c) 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):
Sequence
Job
1
▼
B
D
C
A
Part 16
2
▼
D
C
A
B
Part 17
3
▼
C
D
A
B
4
▼
B
C
A
D
The average tardiness (job lateness) for the sequence developed using the LPT rule =
days (round your response to two decimal places).
Part 20
The average completion time (flow time) for the sequence developed using the LPT rule =
days (round your response to two decimal places).
Part 21
The percentage utilization for the sequence developed using the LPT rule =
enter your response here% (enter your response as a percentage rounded to two decimal places).
Part 22
d) 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):
Sequence
Job
1
▼
D
B
C
A
2
▼
A
C
D
B
3
▼
B
C
A
D
4
▼
C
A
B
D
The average tardiness (job lateness) for the sequence developed using the EDD rule =
days (round your response to two decimal places).
Part 27
The average completion time (flow time) for the sequence developed using the EDD rule =
days (round your response to two decimal places).
Part 28
The percentage utilization for the sequence developed using the EDD rule =
% (enter your response as a percentage rounded to two decimal places).
Part 29
e) Using the Critical Ratio (CR)
Sequence
Job
1
▼
C
B
D
A
2
▼
D
C
B
A
3
▼
A
D
B
C
4
▼
C
A
B
D
Part 33
The average tardiness (job lateness) for the sequence developed using the CR rule =
days (round your response to two decimal places).
Part 34
The average completion time (flow time) for the sequence developed using the CR rule =
enter your response here days (round your response to two decimal places).
Part 35
The percentage utilization for the sequence developed using the CR rule =
% (enter your response as a percentage rounded to two decimal places).
.
.
.
Part 1
An Alabama lumberyard has four jobs on order, as shown in the following table. Today is day on the yard's schedule. In what sequence would the jobs be ranked according to the decision rules on the left:
Job
Due Date
Duration (days)
All dates are specified as manufacturing planning calendar days. Assume that all jobs arrive on day . Compute all times based on initiating work on day 205
![**Job Sequencing with FCFS, SPT, and LPT Rules**
An Alabama lumberyard has four jobs on order, as shown in the following table. Today is day 205 on the yard's schedule. In what sequence would the jobs be ranked according to the decision rules on the left?
| Job | Due Date | Duration (days) |
|-----|----------|-----------------|
| A | 208 | 4 |
| B | 210 | 8 |
| C | 209 | 5 |
| D | 212 | 6 |
**Assumptions:**
- All dates are specified as manufacturing planning calendar days.
- Assume that all jobs arrive on day 205.
- Compute all times based on initiating work on day 205.
### a) Using the FCFS (first come, first served) decision rule:
Assume that jobs came in the order in which they are listed in the table.
**Sequence:**
1. [Drop-down menu for selecting job]
2. [Drop-down menu for selecting job]
3. [Drop-down menu for selecting job]
4. [Drop-down menu for selecting job]
**Metrics:**
- The average tardiness (job lateness) for the sequence developed using the FCFS rule = [Input box for days] days (round your response to two decimal places).
- The average completion time (flow time) for the sequence developed using the FCFS rule = [Input box for days] days (round your response to two decimal places).
- The percentage utilization for the sequence developed using the FCFS rule = [Input box for percentage] % (enter your response as a percentage rounded to two decimal places).
### b) Using the SPT (shortest processing time) decision rule:
To resolve a tie, use the order in which the jobs were received.
**Sequence:**
1. [Drop-down menu for selecting job]
2. [Drop-down menu for selecting job]
3. [Drop-down menu for selecting job]
4. [Drop-down menu for selecting job]
**Metrics:**
- The average tardiness (job lateness) for the sequence developed using the SPT rule = [Input box for days] days (round your response to two decimal places).
- The average completion time (flow time) for the sequence developed using the SPT rule = [Input box for days] days (round](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F135ae681-a644-4164-9b10-2ae2e87534da%2F85013b02-6b7b-4cb3-bc0f-3023439dd96e%2F6e0er2_processed.png&w=3840&q=75)
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