​Two Separate Samples Are Being Used to Estimate the Difference

question 66

Multiple Choice

​Two separate samples are being used to estimate the difference between population means for two treatment conditions.Which of the following would produce the widest confidence interval?

• A)​n₁ =n₂ = 10 with a pooled variance of 10
• B)​n₁ =n₂ = 10 with a pooled variance of 100
• C)​n₁ =n₂ = 20 with a pooled variance of 10
• D)​n₁ =n₂ = 20 with a pooled variance of 100

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Definitions:

Operational Definition

A clear, precise description of how variables are measured or defined in a research study.

Abstract Conceptual Variable

A variable that represents intangible qualities or ideas that are not directly observable but can still be measured through indirect means.

Death Anxiety

The fear or apprehension about the inevitability of death or the dying process, which can influence personal behavior, beliefs, and psychological well-being.

Independent Variable

The variable that is manipulated or changed in an experiment to test its effects on the dependent variable.