When Testing for the Significance of the Difference Between Two

question 3

Multiple Choice

When testing for the significance of the difference between two sample means,which parameters must be estimated with sample values?

• A)the population standard deviations
• B)the population means
• C)the standard deviation of the sampling distribution
• D)the alpha value

---

Definitions:

Cross-Sectional

A research design that examines data from a population, or a representative subset, at one specific point in time.

Mixed Design

A research design that combines elements of both within-subjects (measuring the same subjects across different conditions) and between-subjects designs (comparing different groups of subjects).

Longitudinal Research

A research design in which the same subjects are observed for an extended period of time to detect any changes that may occur.

Stability Of Behavior

Refers to the consistency of individual behaviors over time and across situations, emphasizing the enduring nature of personality and actions.