Exercise Test yourself. Draw a network diagram, and answer the following questions. You are the project manager for a new project and have figured out the following dependencies . Activity I 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 I 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