Use the Values in the Table to Calculate Activity Durations

question 25

Essay

Use the values in the table to calculate activity durations and variances for the project.What is the likelihood that the project takes between 60 and 55 days to complete?
$\begin{array}{|l|l|l|l|}\hline \text { Activity } & \text { Activity time } & \begin{array}{l}\text { Standard } \\\text { deviation }\end{array} & \text { Predecessor } \\\hline \mathrm{A} & 12 & 3 & \\\hline \mathrm{B} & 8 & 2 & \mathrm{~A} \\\hline \mathrm{C} & 9 & 1 & \mathrm{~A} \\\hline \mathrm{D} & 5 & 1 & \mathrm{~B} \\\hline \mathrm{E} & 12 & 0 & \mathrm{~B} \\\hline \mathrm{F} & 10 & 0 & \mathrm{C} \\\hline \mathrm{G} & 7 & 2 & \mathrm{C} \\\hline \mathrm{H} & 9 & 3 & \mathrm{E}, \mathrm{G} \\\hline \mathrm{I} & 15 & 2 & \mathrm{D}, \mathrm{G} \\\hline \mathrm{T} & 8 & 2 & \mathrm{H} \\\hline \mathrm{K} & 11 & 3 & \mathrm{I} \\\hline \mathrm{L} & 7 & 2 & \mathrm{~J}, \mathrm{~K} \\\hline\end{array}$

---

Definitions:

Nameplate Rating

The official specifications provided by manufacturers that detail the operating conditions and capabilities of an equipment.

Full-load Horsepower

The amount of power generated by an engine or motor when operating at its maximum permissible load.

Three-phase Induction Motors

These motors operate on three-phase AC power and are widely used in industrial applications due to their robustness, efficiency, and reliability.

Physical Connection

The tangible linking of two or more objects, components, or systems, allowing for the transfer of electricity, signals, or mechanical force.