Brian Smith, a network administrator at Advanced Energy Technology $($AET$),$ was

responsible for migrating a large data centre to a new office location. Careful planning was

needed because AET operates in the highly competitive petroleum industry. AET is one of

five national software companies that provide an accounting and business management

package for oil jobbers and gasoline distributors. A few years ago, AET jumped into the

"application service provider" world. Their large data centre provides clients remote access to

AET's complete suite of application software systems. Traditionally, one of AET's primary

competitive advantages has been the company's trademark IT reliability. Due to this project's

complexity, the Executive Committee insisted that a preliminary analysis of the anticipated

completion date be conducted.

Brian compiled the following information in Table $1$ in preparation for some CPM

analysis. Assume a five$-$day workweek; the project will start on September $1,2023.$

Given the information in Table $1,$ do the followings:

$($a$)$ Draw the project network AND compute the slack time for each activity in the project