Suppose That a Normal Model Described Student Scores in a History

question 74

Multiple Choice

Suppose that a Normal model described student scores in a history class. Parker has a standardized score (z-score) of +2.5. This means that Parker

• A) is 2.5 standard deviations above average for the class.
• B) has a standard deviation of 2.5.
• C) has a score that is 2.5 times the average for the class.
• D) is 2.5 points above average for the class.
• E) none of these

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Definitions:

Cholesterol

A type of fat found in the blood, essential for the body's functioning but high levels of which can lead to cardiovascular diseases.

Margin of Error

The amount of error allowed in the results of a statistical survey, expressed as a percentage and indicating the confidence in the results.

Mean Weight

The average mass of objects or individuals, calculated by summing their weights and dividing by the number of objects or individuals.

Sample

A subset of individuals, items, or data taken from a larger population, used to make inferences about the whole population.