Two Independent Samples of Sizes 20 and 30 Are Randomly

question 136

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:

Break Old Routines

The act of changing established habits or patterns of behavior to improve outcomes or adapt to new circumstances.

Resistance Change

The opposition or reluctance to modify existing routines, practices, or structures within an organization or personal behavior.

New Role Patterns

Entails the adoption of different or evolving behaviors and responsibilities in professional or social contexts, often in response to changes in the organizational or societal structure.

Appreciative Inquiry

A change management approach that focuses on identifying what is working well, analyzing why it is working well, and then doing more of it.