I need help with this and please list step by step:

Consider the following table:

ACTIVITYPREC. ACT.TIMEESTIMATES(days)

t_ot_mlt_pt_e

A---444

BA456

CA246

DB468

EC135

FD153

GF, E333

1) Construct a PERT network.

[NOTE: This is the most crucial part of the exercise. Make sure you have the correct network before proceeding to the next sections.]

2) By using ES, EF, LF, LS, find the slack of each activity and the critical path.

3) Find the completion time and the standard deviation () for the project round off the standard

deviation to the nearest hundredth:twodecimal places.

4) What is the completion time at 95%confidence level?

5) What is the likelihood of this project being completed earlier than19days?

6) What is the likelihood of this project being completed later than23days?