The following table contains information concerning four jobs that are awaiting processing at a work center.

Job Job Time (Days) Due Date
(Days)
A 14 20
B 10 16
C 7 15
D 6 17

a.
Sequence the jobs using (1) First come, first served, (2) Shortest processing time, (3) Earliest due date, and (4) Critical ratio. Assume the list is by order of arrival.

Sequence for First come, first served (Click to select)A-B-C-DD-C-B-AC-B-D-AA-C-D-B
Sequence for Shortest processing time (Click to select)D-C-B-AA-C-D-BC-B-D-AA-B-C-D
Sequence for Earliest due date (Click to select)C-B-D-AD-C-B-AA-B-C-DA-C-D-B
Sequence for Critical ratio (Click to select)A-B-C-DD-C-B-AC-B-D-AA-C-D-B

b.
For each of the methods in part a, determine (1) the average job flow time, (2) the average tardiness, and (3) the average number of jobs at the work center. (Round your intermediate calculations and final answers to 2 decimal places.)

First Come, First Served Shortest Processing Time Earliest Due Date Critical Ratio
Average job flow time
Average tardiness
Average number of jobs

1

 The  correct option is  A

2

 The  correct option is  C

3

 The  correct option is  C

Step-by-step explanation:

From the question we are told that

   The proportion of the winning bid from a regular bidder is  

   The proportion of the winning bid from a occasional bidders is  

     The proportion of the winning bid from a first- time bidders is  

    The proportion of  satisfactory jobs done by a regular bidders is

The proportion of  satisfactory jobs done by a occasional bidders is    

The proportion of  satisfactory jobs done by a first- time bidders is  

Generally the probability that a job will be done by a first-time bidder and be satisfactory is mathematically represented as

=>        

=>      

Generally the probability that a job will be satisfactory is mathematically represented as

=>    

Generally given that a job is satisfactory, what is the probability that it was done by a regular bidder is mathematically evaluated as

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.