Compare a Graph of the Normal Density Function with Mean

question 89

Multiple Choice

Compare a graph of the normal density function with mean of 0 and standard deviation of 1 with a graph of anormal density function with mean equal to 4 and standard deviation of 1. The graphs would

• A) Have the same height but one would be shifted 4 units to the right.
• B) Have the same height but one would be shifter 4 units to the left.
• C) Have no horizontal displacement but one would be steeper that the other.
• D) Have no horizontal displacement but one would be flatter than the other.

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Definitions:

One-Tailed T Test

A variation of the t-test that is used when a hypothesis predicts the direction of a potential difference between group means; it assesses whether this predicted difference is statistically significant in one specific direction.

Correlations

A statistical measure that expresses the extent to which two variables change together.

Groups

Collections of subjects, items, or observations often categorized based on specific characteristics for analysis.

Two-Tailed T Test

A statistical hypothesis test used to determine if there is a significant difference between the means of two groups, with no presumption about the direction of the difference.