Exhibit 15 -Refer to Exhibit 15

question 42

Essay

Exhibit 15.4
The following questions are based on the information below.
A company needs to manage a project which consists of the following set of activities:
$$\begin{array} { c c c } \text { Activity } & \begin{array} { c } \text { Days } \\\text { Required }\end{array} & \begin{array} { c } \text { Predecessar } \\\text { Activties }\end{array} \\\hline \text { A } & 1 & - \\\text { B } & 4 & \text { A } \\\text { C } & 3 & B \\\text { D } & 3 & \mathrm { C } \\\text { E } & 2 & B \\\text { F } & 4 & E \\G & 2 & D . F\end{array}$$
-Refer to Exhibit 15.4. The following spreadsheet was developed to determine the earliest start times and latest start times for the project. Based on the data in the spreadsheet, which activities are on the critical path?
$\begin{array}{|c|c|c|c|c|c|c|c|c|c|} \hline& \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} & \mathrm{E} & \mathrm{F} & \mathrm{G} & \mathrm{H} & \mathrm{I} \\\hline 1 & \text { Activity } & \text { Description } & \text { Predecessor } & \text { Time } & \text { EST } & \text { EFT } & \text { LST } & \text { LFT } & \text { Slack } \\\hline 2 & \text { A } & \text { Activity A } & & 1 & 0 & 1 & 0 & 1 & 0 \\\hline 3 & \text { B } & \text { Activity B } & \text { A } & 4 & 1 & 5 & 1 & 5 & 0 \\\hline 4 & \text { C } & \text { Activity C } & \text { B } & 3 & 5 & 8 & 5 & 8 & 0 \\\hline 5 & \text { D } & \text { Activity D } & \text { C } & 3 & 8 & 11 & 8 & 11 & 0 \\\hline 6 & \text { E } & \text { Activity E } & \text { B } & 2 & 5 & 7 & 5 & 7 & 0 \\\hline 7 & \text { F } & \text { Activity F } & \text { E } & 4 & 7 & 11 & 7 & 11 & 0 \\\hline 8 & \text { G } & \text { Activity G } & \text { D, F } & 2 & 11 & 13 & 11 & 13 & 0\\\hline\end{array}$

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Definitions:

Analytical Comparisons

The examination and evaluation of differences and relationships between data groups through statistical methods.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists within the data set being analyzed.

Familywise Error

Probability of making at least one Type I error across a set of comparisons.

Type I Errors

Mistakes made by falsely rejecting the null hypothesis when it is in fact true; also known as false positives.