When Using the Beta Probability Distribution to Estimate Activity Times

question 33

Multiple Choice

When using the beta probability distribution to estimate activity times, which of the following statements is TRUE?

• A) The use of most optimistic, most likely, and most pessimistic times for an activity will result in a determination of the expected times for that activity.
• B) The beta distribution is used as a way of approximating a normal probability distribution for time estimates.
• C) The larger the difference between most pessimistic time and most optimistic time for an activity, the smaller the variance of that time estimate.
• D) The project manager is usually the only person involved in making time estimates, since obtaining estimates from workers involved in the activities would result in inconsistent estimates.

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Definitions:

Omnibus Test

A type of statistical test designed to assess whether there is a significant overall difference among three or more unpaired groups.

Specific Comparisons

Detailed examinations of particular relationships or differences between variables in a dataset.

Overall Differences

The disparities or variations observed when comparing multiple sets of data.

2 × 4 ANOVA

A type of Analysis of Variance test that examines the effect of two independent variables, each with two and four levels respectively, on a dependent variable.