Two Independent Samples of Sizes 20 and 25 Are Randomly

question 49

Multiple Choice

Two independent samples of sizes 20 and 25 are randomly selected from two normal populations with equal variances.In order to test the difference between the population means,the test statistic is:

• A) a standard normal random variable
• B) approximately standard normal random variable
• C) t-distributed with 45 degrees of freedom
• D) t-distributed with 43 degrees of freedom

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Definitions:

Personality Dimensions

Fundamental categories or aspects that describe and differentiate individual personalities, such as openness, conscientiousness, extraversion, agreeableness, and neuroticism.

Stress

A physical or emotional response to external or internal pressures, often characterized by feelings of tension or anxiety.

Work Stress

A response to pressures or demands placed on individuals which is seen as beyond their knowledge and abilities to cope.

Life Stress

The type of stress experienced from daily life events, which can range from minor daily hassles to major life changes, impacting an individual's well-being.