Q$.1($b$)$: Consider a assembly line of XYZ$,$ at ABC, factory. Where, you must

take into account a number of elements, such as the intricacy of each task, the

personnel's skill level, and any relationships between tasks, in order to estimate

the amount of time needed for each activity in the modification of an assembly

scenario. A generic template with placeholders for immediate predecessors is

provided below for you to utilize when estimating job times. $(5$ Marks$)$

ACTIVITY TIME $($IN HOURS$)$ IMMEDIATE PREDECESSORS

Activity $14$ None

Activity $28$ None

Activity $36$ Activity $1$

Activity $410$ Activity $2,$ Activity $3$

Activity $512$ Activity $2,$ Activity $3$

Activity $68$ Activity $4$

Activity $74$ Activity $5,$ Activity $6$

a$)$ Draw the project network.

b$)$ Identify the critical path using forward and backward path calculation.

c$)$ What is the expected project length?

Make assumptions if necessary