A project network is shown below. Use a forward and a backward pass to determine the critical path, and then fill out the table below. Activity times are in weeks. 
Now assume that the times listed are only the expected times instead of being fixed times. Is the probability of being finished in more than 28 weeks more or less than 50%?
Definitions:
Lower Control Limit
The threshold in control charts below which the process variability is considered to be in control and acceptable.
Nonconforming Transistors
Transistors that do not meet specified criteria or operational standards set by quality control, often due to manufacturing defects.
Electronics Company
A company that designs, manufactures, and sells electronic equipment, devices, and consumer products.
Lower Control Limit
The lowest boundary in control charts that indicates the threshold below which a process may be out of control.
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