Two Independent Samples of Sizes 20 and 30 Are Randomly

question 43

Multiple Choice

Two independent samples of sizes 20 and 30 are randomly selected from two normally distributed populations. Assume that the population variances are unknown but equal. In order to test the difference between the population means, , the sampling distribution of the sample mean difference, , is:

• A) normal.
• B) Student-t with 50 degrees of freedom.
• C) Student-t with 48 degrees of freedom.
• D) None of these choices.

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Definitions:

Task-oriented Behaviors

Actions and activities focused on completing assigned tasks or achieving certain objectives, often emphasizing efficiency and effectiveness.

Performance Standards

Benchmarks or expectations that define the level of quality or achievement required in a particular area of work or activity.

Standard Procedures

Established methods or protocols that are followed to ensure consistent and effective outcomes in organizational or operational processes.

Supportive Leadership

A leadership style characterized by a focus on employees' well-being, emphasizing emotional support and encouragement.