Shifts Between Deeper and Lighter Sleep

question 31

Multiple Choice

Shifts between deeper and lighter sleep

• A)occur only during the last half of a night's sleep.
• B)occur just once per night unless the sleeper is suddenly awakened.
• C)occur repeatedly throughout the night.
• D)are the first sign of sleep deprivation.

---

Definitions:

Two-tailed Hypothesis Test

A statistical test that considers both directions of the effect, testing for the possibility of an effect in both directions from the null hypothesis.

Test Statistic

A calculated value from sample data used to make a decision about the truth of a hypothesis in statistical hypothesis testing.

P-value

A statistical measure that helps to determine the significance of results, indicating the probability that observed data occurred under the null hypothesis.

Filling Machine

A device used in manufacturing industries to fill products, such as liquids, powders, or gases, into containers or packaging.