Which of the Following Statements Are True?
A) Knowledge of the Test

question 38

Multiple Choice

Which of the following statements are true?

• A) Knowledge of the test statistic's distribution when the null hypothesis is true allows us to construct a rejection region for which the type I error probability is controlled at the desired level.
• B) The rejection region for the t test differs from that for the z test only in that a t critical value replaces the z critical value.
• C) If \(X _ { 1 } , X _ { 2 } , \ldots \ldots , X _ { n }\)
• (n is small) is a random sample from a normal distribution, the standardized variable \(T = ( \bar { X } - \mu ) / ( S / \sqrt { n } )\)
• Has a t distribution with n-1 degrees of freedom.
• D) All of the above statements are true.
• E) None of the above statements are true.

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Definitions:

Circulatory System

The body system that transports nutrients, oxygen, carbon dioxide, hormones, and blood cells to and from cells in the body to nourish it and help fight diseases.

Vertebrate

An animal possessing a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fish.

Lymph System

A network of vessels, tissues, and organs that helps to maintain the body's fluid balance and protect it from infections.

Digestive System

A group of organs working together to convert food into energy and basic nutrients to feed the entire body.