The Mean of a Standard Normal Distribution Is Always Equal

question 7

Multiple Choice

The mean of a standard normal distribution is always equal to ________.

• A) 1
• B) .5
• C) 0
• D) −1

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Definitions:

Null Hypothesis

A default statement that there is no effect or no difference, used as a starting point for statistical testing.

Main Effects

The individual impacts of multiple independent variables on a dependent variable in an experimental setting, rephrased from main effect.

Factorial Design

An experimental strategy where two or more factors are varied, allowing researchers to study their individual effects and interactions.

Null Hypothesis

A hypothesis that assumes no significant difference or effect within the context of the study.