bask time estimates for a production line setup project Robert Klassen$$s Ontario factory are as follows: a$)$ Draw the project network using AON.b$)$ Identify the critical path.c$)$ What is the expected project length? d$)$ Draw a Gantt chart for the project.

Activity Time Immediate Predecessors

A $6\mathrm{.}0---$

B $7\mathrm{.}2--$

C $5\mathrm{.}0$ A

D $6\mathrm{.}0$ B$,$C

E $4\mathrm{.}5$ B$,$C

F $7\mathrm{.}7$ D

G $4\mathrm{.}0$ E$,$F