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Chapter 1: 7OQ (page 101)

The R&D department is planning to bid on a large project to develop a new communication system for commercial planes. The accompanying table shows the activities, times, and sequences required:

a. Draw the network diagram.

b. What is the critical path?

c. Suppose you want to shorten the completion time as much as possible, and you have the option of shortening any or all of B, C, D, and G each one week. Which would you shorten?

d. What is the new critical path and earliest completion time?

Short Answer

Expert verified

Answer

The critical path technique, also known as critical route analysis, is a timing strategy for collecting project tasks. It is frequently used in tandem with the program evaluation and reviewing approach.

Step by step solution

01

(a) The network diagram

By using the below table, we can create a network diagram for the given data:

02

(b) The critical path

The total time of each path is given below:

Two paths in particular A-C-F-G-I and A-D-F-G-I include the most significant length of time of 18 weeks. Accordingly, both would be considered the basic way of the task.

03

(c) The completion time

The completion season of the venture is 18 weeks. One can abbreviate the completion time by lessening exercises that are normal in the two paths. Accessible exercises that can be abbreviated by multi-week are B, C, D, and G. Since basic paths convey exercises C, D, and G, every one of the three exercises is diminished by multi-week.

04

(d) The new critical path and earliest completion time

When C, D, and G exercises are decreased by multi-week, new critical paths are A-C-F-G-1 and A-D-F-G-I.

In this manner, the new critical way would stay the same: A-C-F-G-I and A-D-F-G-I.

The earliest completion time for both the new critical paths is determined as shown beneath:

鈥� A-D-F-G-I = 3+3+6+1 + 3 = 16 weeks

鈥� A-C-F-G-I = 3 + 3 + 6 + 1 + 3 = 16 weeks

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Most popular questions from this chapter

Question: 10. Tuff Wheels was getting ready to start its development project for a new product to be added to its small motorized vehicle line for children. The new product is called the Kiddy Dozer. It will look like a miniature bulldozer, with caterpillar tracks and a blade. Tuff Wheels has forecasted the demand and the cost of developing and producing the new Kiddy Dozer. The table below contains the relevant information for this project.

Tuff Wheels also has provided the project plan shown below. As can be seen in the project plan, the company thinks that the product life will be three years until a new product must be created.

a. What are the yearly cash flows and their present value (discounted at 8 percent) of this project? What is the net present value?

b. What is the impact on NPV for the Kiddy Dozer if the actual unit sales are 50,000 per year or 70,000 per year?

c. What is the effect caused by changing the discount rate to 9, 10, or 11 percent?

Question: Bragg鈥檚 Bakery is building a new automated bakery in downtown Sandusky. Here are the activities that need to be completed to get the new bakery built and the equipment installed.

a. Draw the project diagram.

b. What is the normal project length?

c. What is the project length if all activities are crashed to their minimum?

d. Bragg鈥檚 loses \(3,500 in profit per week for every week the bakery is not completed.

How many weeks will the project take if we are willing to pay to crash cost as long as it is less than \)3,500?

Question: Match the following common risks with the appropriate mitigation strategy:

Country risks A. Detailed tracking, alternate suppliers

Regulatory risk B. Careful selection and monitoring of suppliers

Logistics failure C. Contingency planning, insurance

Natural disaster D. Good legal advice, compliance

Major quality failure E. Currency hedging, local sourcing

Suppose that Always Rain Irrigation鈥檚 marketing department will undertake an intense ad campaign for the bronze sprinklers, which are more expensive but also more durable than the plastic ones. Forecast demand for the next four years is

Yearly Demand

1 (IN 000s)

2 (IN 000s)

3 (IN 000s)

4 (IN 000s)

Plastic 90

32

44

55

56

Plastic 180

15

16

17

18

Plastic 360

50

55

64

67

Bronze 90

11

15

18

23

Bronze 180

6

5

6

9

Bronze 360

15

16

17

20

What are the capacity implications of the marketing campaign (assume no learning)?

Match the following characteristics with their relevant project team organizational structures.

__________ The project is housed within a functional division of the firm.

__________ A project manager leads personnel from different functional areas.

__________ Personnel work on a dedicated project team.

__________ A team member reports to two bosses.

__________ Team pride, motivation, and commitment are high.

__________ Team members can work on several projects.

__________ Duplication of resources is minimized.

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