A Project Consists of Four Consecutive Tasks That Have Average

question 9

Multiple Choice

A project consists of four consecutive tasks that have average duration and worst-case duration estimates (in days) as shown in the table.Use Newbold's model to determine the aggregated buffer of one standard deviation for this project. $$\begin{array} { | l | l | l | } \hline \text { Activity } & \text { Average } & \text { Worst-Case } \\\hline \mathrm { X } & 12 & 20 \\\hline \mathrm { Y} & 20 & 25 \\\hline \mathrm { Z} & 14 & 24 \\\hline \mathrm { W } & 18 & 26 \\\hline\end{array}$$

• A)31 days
• B)16 days
• C)8 days
• D)5 days

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Definitions:

Lungs Collapse

Lung collapse, also known as pneumothorax, occurs when air leaks into the space between the lung and chest wall, causing the lung to collapse.

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the rest of the body and returns carbon dioxide from the body to the lungs.

Bicarbonate Ions

A significant metabolic intermediate that regulates blood pH, involved in buffering systems, and represented chemically as HCO3-.

Plasma

The liquid component of blood in which the blood cells are suspended, containing water, salts, enzymes, antibodies, and other proteins.