Consider the Following Work Breakdown Structure

question 6

Multiple Choice

Consider the following work breakdown structure:

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:

Alpha (α)

In hypothesis testing, the threshold probability for incorrectly rejecting the null hypothesis, representing the level of significance of the test.

Beta (β)

In statistics, it often represents the probability of committing a Type II error, or in regression, it denotes the slope coefficients representing the change in the dependent variable for a one-unit change in the independent variable.

Hypothesis

A hypothesis is a proposed explanation or assumption for a phenomenon or a relationship between variables that can be tested through research and experimentation.

Null Hypothesis

The null hypothesis is a statement in statistics that suggests no significant effect or relationship exists in the population; it is the hypothesis that a statistical test aims to disprove.