A project consists of five activities.Naturally,the paint mixing precedes the painting activities.Also,both ceiling painting and floor sanding must be done prior to floor buffing. 
a.Construct the PERT/CPM network for this problem.
b.What is the expected completion time of this project?
c.What is the probability that the project can be completed within nine hours?
Definitions:
Notify Authorities
The act of informing responsible or governing bodies, typically in the context of reporting incidents, emergencies, or situations requiring their attention or intervention.
Degaussing
The process of decreasing or eliminating a remnant magnetic field, commonly used to erase data from magnetic storage media or to reduce magnetic interference.
Low-Level Formatting
The process of outlining the positions of tracks and sectors on a hard disk drive or other storage devices, preparing it for the high-level formatting.
Hard Drives
Hard drives are data storage devices used for storing and retrieving digital information using rapidly rotating disks coated with magnetic material.
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