A$)$ draw an AON network for this project?

B$)$ what is the expected project duration $($TE$)?$

C$)$ what is the variance of project duration?

D$)$ what is the probability that the project will complete before schedule time $($Ts$)$ of $60?$

E$)$ what is the probability that the project will complete after schedule time $($Ts$)$ of $45?$