A company has a PERT project with path b-d-e-g-i that has these activity time estimates in days: 
a.What is the expected duration for activity e?
b.What is the variance for activity b?
c.What is the standard deviation of the path?
Definitions:
Output Instructions
Commands within a programming language or PLC code that direct the system to perform specific actions or control external devices based on processed data or logic conditions.
Jumps
A programming instruction that skips the execution of a sequence of code to another point in the program.
MCR Instruction
A Master Control Reset instruction used in programming to define the start and end of a block of program instructions that can be conditionally skipped.
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