You Are Testing the Difference Between Two Population Means

question 4

Multiple Choice

You are testing the difference between two population means.The sample sizes are small.Under the assumption that the standard deviations of the two populations are equal and using a pooled estimator for the standard deviation, which of the following statements is true?

• A)the sample size must be increased in order to conduct a proper test
• B)the standard normal distribution can be used
• C)the t distribution with n₁ + n₂ degrees of freedom is used
• D)the t distribution with n₁ + n₂ - 2 degrees of freedom is used
• E)none of the above

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Definitions:

Firmness of Truth

This term is conceptual and refers to the unwavering quality or state of being true and constant in beliefs or assertions.

Tribal Members

Individuals who belong to a tribe, a social group existing before the development of, or outside of, states, often defined by kinship or clan relationships.

Commonalities

Features or characteristics that are shared by two or more entities, highlighting similarities among them.

Civil Disobedience

The active, professed refusal to obey certain laws, demands, or commands of a government or occupying power, without resorting to physical violence.