8.4 Exercise Test yourself. In your Exercise Notebook, draw a network diagram based on the following information, and then answer questions 1-7 below.

You are the project manager for a new project and have figured out the following dependencies:

• Activity 1 can start immediately and has an estimated duration of 3 weeks.

• Activity 2 can start after activity 1 is completed and has an estimated duration of 3 weeks.

• Activity 3 can start after activity 1 is completed and has an estimated duration of 6 weeks.

• Activity 4 can start after activity 2 is completed and has an estimated duration of 8 weeks.

• Activity 5 can start after activity 4 is completed and after activity 3 is completed. This activity takes 4 weeks.

Questions:

1. What is the duration of the critical path?

2. What is the float of activity 3?

3. What is the float of activity 2?

4. What is the float of the path with the most float?

5. The resource working on activity 3 is replaced with another resource who is less experienced. The activity will now take 10 weeks. How will this affect the project schedule?

6. A new activity 6 is added to the project. It will take 11 weeks to complete and must be completed before activity 5 and after activity 3. Management is concerned that adding the activity will add 11 weeks to the project. Another stakeholder argues the time will be less than 11 weeks. Who is correct? Use the original information (without the change to activity 3 listed in the previous question) to answer this question.

7. Based on the information in the previous question, how much longer will the project take?