Given That Z Is a Standard Normal Variable, the Variance $2.0$

question 90

Multiple Choice

Given that Z is a standard normal variable, the variance of Z:

• A) is always greater than \(2.0\).
• B) is always greater than \(1.0\).
• C) is always equal to \(1.0\).
• D) cannot assume a specific value.

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Definitions:

Proof 1

A logical or mathematical demonstration showing that a specific statement or theorem is true, based on accepted axioms and inference rules.

Proof 2

An alternative term generally meaning evidence or argument establishing a fact or the truth of a statement.

Demonstrations

organized activities by a group of people to show their protest, or support for, or against a cause.

Validity

The property of an argument in which the truth of the premises logically guarantees the truth of the conclusion.