A Professor of Women's Studies Is Interested in Determining If

question 72

Multiple Choice

A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained. The obtained value of the appropriate statistic for evaluating H ₀ is _________.

• A) t obt = - 4.73
• B) t obt = - 4.71
• C) t obt = - 3.05
• D) t obt = - 0.47

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Definitions:

Formal Operations

A stage in Piaget's theory of cognitive development where abstract, logical, and systematic thinking emerges, typically during adolescence.

Rationales

Explanations or reasons for an action or belief, often used to justify decisions and behaviors.

Primacy Effect

The tendency to remember information at the beginning of a list better than information in the middle or at the end.

Halo Effect

A cognitive bias where an individual's overall impression of a person influences how they feel and think about that person's character.