Exercise Test yourself. Draw a network diagram, and then answer the following questions.

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.