I've Tried my hardest to understand this and i can't i need help. And online school doesn't help.

Construct a PERT/CPM chart based on the table below. Determine the critical path.

Use the "Most Likely Time" as the duration for each activity.Ignore the "Most Optimistic Time" and the "Most Pessimistic Time".

Time -Estimates (in weeks) Activity . Preceding Most optimistic Most likely Most Pessimestic activity time (a) time (m) time (b) None NJ 12 None 26 BC 9 D 3.5 E, F,G