The following data were obtained from a study of the times required to conduct a consumer test panel study:
Crash Schedule Normal Schedule
Activity Time Cost Time Cost
1-2 3 $6 5 $4
1-3 1 $5 5 $3
2-4 5 $7 10 $4
3-4 2 $6 7 $4
2-6 2 $5 6 $3
4-6 5 $9 11 $6
4-5 4 $6 6 $3
6-7 1 $4 5 $2
5-7 1 $5 4 $2
Note: Costs are given in thousands of dollars, time in weeks
(a) Find the all-normal schedule and cost.
(b) Find the all-crash schedule and cost.
(c) Find the total cost required to expedite all activities from all-normal (see a) to all-crash (see b).
(d) Find the least-cost plan for the all-crash time schedule. Start from the all-crash problem (see b). Assume partial crashing.