For this schedule use PERT to find the completion time for the activities but also find the probability of completing the project in 15,16,17,18 months

Most likely Max duration Predecessors Activity Min duration A Requirements analysis 2 months B Programming 6 months C Hardware acquisition 3 months D Train users 12 months E Implementation 3 months F Testing 1 month 3 months 7 months 3 months 12 months 5 months 1 month 4 months 9 months 3 months 12 months 7 months 2 months None A A A B, C E