The Test Statistic Used to Test Hypotheses About the Population

question 147

Short Answer

The test statistic used to test hypotheses about the population variance has a chi-squared distribution with ____________________ degrees of freedom.

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Definitions:

Type I Error

The mistaken dismissal of a valid null hypothesis, commonly known as a "false positive."

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true; often denoted by alpha.

Effect Size

A quantifiable measure of the magnitude of the difference between groups or the strength of a relationship in research findings.

Cohen

A surname often associated with statistical measures of effect size, such as Cohen's d for measuring the difference between two means.