A Project Manager Has Discovered That Three Tasks Are on the Critical

question 6

Multiple Choice

A project manager has discovered that three tasks are on the critical path for a particular project.She has developed the time estimates (in days) shown in the table below.Complete the table and determine the probability that the project will be completed in 20 days or less.

• A)Approximately 92 percent
• B)Approximately 88 percent
• C)Approximately 75 percent
• D)Approximately 84 percent

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Definitions:

Independent

The condition where two variables do not affect or influence each other.

Standard Error

The standard deviation of the sample mean's distribution; a measure of how much a sample mean varies from the true population mean.

Pooled Estimator

A statistical method that combines multiple estimates to produce a better overall estimate.

Variance

The square of the standard deviation, representing the average of the squared differences from the mean, and measures the spread of a data set.