As a General Rule, an Investigation of a Variance Should

question 10

Multiple Choice

As a general rule, an investigation of a variance should be undertaken only if the

• A) anticipated benefits are greater than zero.
• B) anticipated benefits are greater than the expected costs.
• C) variance is negative.
• D) variance is positive.

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Definitions:

Research Hypothesis

An educated guess or prediction made for the purpose of testing through scientific research, stating a potential outcome or relationship.

Critical Values

Thresholds in hypothesis testing which, if exceeded by the test statistic, indicate that the null hypothesis can be rejected.

Standard Deviation

A metric that quantifies how spread out a dataset is in comparison to its average value.

Standard Error

The standard deviation of the sampling distribution of a statistic, often used to calculate confidence intervals or test hypotheses.