Many Textbooks (Though Not This One) Advocate Testing the Mean

question 45

Multiple Choice

Many textbooks (though not this one) advocate testing the mean of a sample against a hypothesized population mean by using z even if the population standard deviation is not known, so long as the sample size exceeds 30. Those books recommend this because

• A) they don't know any better.
• B) there are not tables for t for more than 30 degrees of freedom.
• C) the difference between t and z is small for that many cases.
• D) t and z are exactly the same for that many cases.

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Definitions:

Motivates Behavior

The underlying reasons or incentives that drive individuals to engage in certain actions or behaviors.

Homeostasis

The autonomous mechanism through which living organisms maintain balance while adapting to conditions most favorable for their survival.

Body Temperature

The measure of the body's ability to generate and get rid of heat, reflecting the balance between the body's heat production and its heat loss.

Perspire

The process of sweating, or secreting fluid from the sweat glands of the skin, which helps to regulate body temperature.