Use the Values in the Table to Calculate Activity Durations

question 97

Essay

Use the values in the table to calculate activity durations and variances for the project.What is the likelihood of finishing this project within 47 days?
$$\begin{array} { | l | l | l | l | l| } \hline \text { Activity } & \text { Predecessor } & \text { Optimistic } & \text { Likely } & \text { Pessimistic } \\\hline \mathrm { A } & - & 5 & 8 & 11 \\ \hline\mathrm { B }&\mathrm { A } & 15 & 20 & 25 \\\hline \mathrm { C } & \mathrm { A } & 7 & 9 & 12 \\\hline \mathrm { D } & \mathrm { A } & 12 & 16 & 20 \\\hline \mathrm { E } & \mathrm { B } , \mathrm { D } & 3 & 11 & 15 \\\hline \mathrm { F } & \mathrm { C } & 13 & 17 & 22 \\ \hline \mathrm { G } & \mathrm { CE } , \mathrm { F } &8 & 9 & 10\\\hline\end{array}$$

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Definitions:

Objective Interactions

are interactions that are observed to occur in a predictable and measurable way, independent of subjective opinions.

Social Group

A collection of individuals who interact with each other, share similar characteristics, and collectively have a sense of unity or identity.

Acquaintanceship

A social relationship between individuals who know each other, but not to the extent of a close friendship.

Confidence

The feeling or belief that one can rely on someone or something; firm trust.