Consider the Network Described in the Table Below A Calculate the Expected Duration of Each Activity

question 18

Essay

Consider the network described in the table below.
$\begin{array} { | c | c | c | c | c | } \hline \text { Activity } & \begin{array} { c } \text { Immediate } \\\text { Predecessor(s) }\end{array} & \text { Pessimistic } & \text { Probable } & \text { Optimistic } \\\hline \mathrm{J} & -- & 15 & 10 & 8 \\\hline \mathrm{K} & -- & 9 & 8 & 7 \\\hline \mathrm{L} & \mathrm{J} & 10 & 6 & 5 \\\hline \mathrm{M} & \mathrm{J} & 3 & 3 & 3 \\\hline \mathrm{N} & \mathrm{K}, \mathrm{M} & 9 & 5 & 1 \\\hline \mathrm{O} & \mathrm{K}, \mathrm{M} & 10 & 7 & 4 \\\hline \mathrm{P} & \mathrm{L}, \mathrm{N} & 10 & 8 & 3 \\\hline\end{array}$
a. Calculate the expected duration of each activity.
b. Calculate the expected duration and variance of the critical path.
c. Calculate the probability that the project will be completed in fewer than 30 time units.

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Definitions:

Parenting Practices

Specific behaviors that parents use to socialize and interact with their children, directly impacting the child's development.

Defense Mechanism

Psychological strategies used unconsciously by individuals to protect themselves from anxiety and internal conflicts.

Displacement

In psychology, a defense mechanism where an individual redirects emotional impulses from a real object to a safer substitute target.

Sublimation

A defense mechanism where socially unacceptable impulses or idealizations are transformed into socially acceptable actions or behavior.