Consider the Following Work Breakdown Structure What Is the Estimated Standard Deviation in the Time for (Days)

question 82

Multiple Choice

Consider the following work breakdown structure: $$\begin{array}{r}\text { Duration Estimates (Days) }\quad\quad\quad\\\begin{array} { l c c c c } \text { Activity } & \text { Precedes } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \\\hline \text { Start } & \text { U, V } & - & - & - \\\text { U } & \text { W } & 35 & 50 & 65 \\\text { V } & \text { W, X } & 28 & 40 & 52 \\\text { W } & \text { Z } & 26 & 35 & 44 \\\text { X } & \text { Y } & 28 & 40 & 52 \\\text { Y } & \text { Z } & 26 & 29 & 38 \\\text { Z } & \text { End } & 36 & 60 & 84\end{array}\end{array}$$ What is the estimated standard deviation in the time for activity Z?

• A) 3 days
• B) 2 days
• C) 4 days
• D) 8 days
• E) 5 days

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Definitions:

Unconditioned Response

An automatic, natural response to a stimulus that occurs without any need for prior learning or conditioning.

Conditioned Stimulus

In classical conditioning, a previously neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response.

Preparedness

The state of being readily equipped to handle anticipated situations or emergencies.

Conditioning

A form of learning in which an individual's response to certain stimuli is modified by reinforcement or punishment.