John Wants to Compare Two Means $\bar { x } _ { 1 } = 22.7 , s _ { 1 } ^ { 2 } = 5.4 , n _ { 1 } = 9$

question 91

Multiple Choice

John wants to compare two means. His sample statistics were $\bar { x } _ { 1 } = 22.7 , s _ { 1 } ^ { 2 } = 5.4 , n _ { 1 } = 9$ and $\bar { x } _ { 2 } = 20.5 , s _ { 2 } ^ { 2 } = 3.6 , n _ { 2 } = 9$ . Assuming equal variances, the test statistic is:

• A)2.37
• B)2.20
• C)1.96
• D)Must know ? to answer.

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Definitions:

Psychological Factors

Refers to the mental, emotional, and cognitive aspects that influence an individual's behavior and well-being.

Abnormal Functioning

A term referring to patterns of behavior, thought, or emotions considered outside the societal norm, possibly indicating a psychological disorder.

Somatogenic Approach

A theoretical approach in psychology and psychiatry that emphasizes the physical causes of mental disorders, focusing on genetic, neurological, or biochemical contributors.

Psychogenic Approach

Psychological factors as the primary cause behind physical symptoms or diseases.