When She Participated in a Sleep Experiment, Yvette Lived in an Isolation

question 590

Multiple Choice

When she participated in a sleep experiment, Yvette lived in an isolation unit for one month without any external time cues. It is very probable that her internal body clock drifted to the natural or intrinsic rhythm of approximately:

• A) 28 days.
• B) 25.2 hours.
• C) 22.4 hours.
• D) 24.2 hours.

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Definitions:

P-value

The probability of observing a statistical summary (for example, the difference in means between two groups) at least as extreme as the one observed, under the assumption that the null hypothesis is true.

Null Hypothesis

A proposition in statistics that implies no association or difference between groups or variables.

Alternative Hypothesis

A statement that directly contradicts the null hypothesis by stating there is a statistically significant effect or difference.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect, serving as a default position that there is no relationship between two measured phenomena.