Question $2$:

$[20]$

You're managing a project to set up an automated sorting system for a parcel distribution centre. Each activity represents a major task in the project, and the times given are estimates of how long each task will take.

$\backslash$table$[[$Activity$,$Description,$\backslash$table$[[$Time Estimate$],[($days$)]],\backslash$table$[[$Immediate$],[$Predecessors$]]],[$A$,$Initial Planning,$5,-],[$B$,$Site Preparation,$4,-],[$C$,$Equipment Procurement,$6,$A$],[$D$,$Layout Design,$3,$B$],[$E$,$Power and Network Setup,$6,$B$],[$F$,$Installation of Software,$2,$D$],[$G$,$Equipment Assembly,$5,$E$],[$H$,$Testing,$8,$C$],[$I$,$Final Integration and System Testing,$5,$F$,$ G$]]$

$2\mathrm{.}1.$ Construct a network diagram for this process.

$2\mathrm{.}2.$ Determine ES$,$ EF$,$ LS$,$ LF and slack for each activity.

$(11)$

$2\mathrm{.}3.$ Determine the critical path and project completion time.