Consider the tasks, durations, and predecessor relationships in the following network. Draw network and answer the questions that follow. a . Draw a project network

Consider the tasks, durations, and predecessor relationships in the following network. Draw network and answer the questions that follow. a$.$ Draw a project network for this problem. $(5$ points$)$ b$.$ Fill in all the blanks in the following table. $(\mathrm{10}$ points$)$ Note: For variance $(\backslash$sigma $^(2))$ in activity time, keep two decimal places.