An Activity Has an Optimistic Time Estimate of 12 Days,a

question 55

Multiple Choice

An activity has an optimistic time estimate of 12 days,a most likely estimate of 16 days,and a pessimistic estimate of 22 days.What is the expected standard deviation of the activity?

• A)Between 1 and 2 days
• B)Between 2 and 3 days
• C)Between 3 and 4 days
• D)Between 4 and 5 days

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Definitions:

Ratio Scale

A scale of measurement where there is a true zero and equal intervals, allowing for the comparison of magnitudes and the performance of mathematical operations.

Statistical Inference

The process of drawing conclusions about a population’s parameters based on a sample taken from the population.

Descriptive Statistics

Statistical techniques used to summarize, show, and describe the basic features of data sets, providing simple summaries about the sample and measures.

Ratio Scale

A scale where there is a true zero point, allowing for the measurement of ratios between data points.