We Are Interested in Testing Whether the Variance of a Population

question 27

Multiple Choice

We are interested in testing whether the variance of a population is significantly less than 1.44. The null hypothesis for this test is

• A) H₀: σ² < 1.44.
• B) H₀: s² ≥ 1.44.
• C) H₀: σ < 1.20.
• D) H₀: σ² ≥ 1.44.

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Definitions:

Confounding Variable

A variable that influences both the dependent variable and independent variable, potentially skewing the results of a study.

Confounding Variable

An external variable in a statistical analysis that correlates with both the dependent and independent variable, potentially misleading the results.

Causal Relationship

A connection between two events where one directly causes the other to occur.

Alternate-form Reliability

The consistency of test scores across different versions of a test, assessing the same construct.