An ANOVA Is Used to Evaluate the Mean Differences Among

question 14

Multiple Choice

An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment.For this study,what is df _{between treatments}?

• A)2
• B)11
• C)33
• D)35

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Definitions:

Population Mean

The average value of a particular characteristic within an entire population.

Confidence Intervals

A range of values, derived from the sample data, that is likely to contain the value of an unknown population parameter, with a certain level of confidence.

Normal Populations

Refers to groups whose underlying distribution follows a normal (Gaussian) distribution, characterized by a symmetric bell-shaped curve.

Confidence Interval

A set of values, taken from data samples, which is predicted to include the value of an unspecified population attribute.