A Researcher Is Curious About the Effect of Sleep on Students

question 73

True/False

A researcher is curious about the effect of sleep on students' test performances. He chooses 50 students and gives each two tests: one given after four hours of sleep and one after eight hours of sleep. The test the researcher should use would be a matched pairs t test.

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Definitions:

Caffeine

A stimulant found in various plants, commonly used to increase alertness and reduce sleepiness.

Dairy Products

Foods produced from the milk of mammals, such as cheese, yogurt, and butter.

Spicy Foods

Food items that contain strong spices and herbs which produce a hot or burning sensation in the mouth.

Isoflavones

A class of phytoestrogens, plant-derived compounds with estrogenic activity, commonly found in soy products.