IQ Test Scores Are Normally Distributed with a Mean of 104

question 143

Multiple Choice

IQ test scores are normally distributed with a mean of 104 and a standard deviation of 15. An individualʹs IQ score is found to be 111. Find the z-score corresponding to this value.

• A)0.47
• B)-0.47
• C)2.14
• D)-2.14

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Definitions:

Resonance Structure

Different forms of a molecule where the chemical connectivity is the same but the electrons are distributed differently around the structure.

Ammonia Molecule

A compound composed of one nitrogen atom and three hydrogen atoms (NH3), notable for its sharp odor.

Valence Shell Electron Pair Repulsion

This theory predicts the geometry of individual molecules from the number of electron pairs surrounding their central atoms.

Hydrogen Sulfide Molecule

A chemical compound with the formula H2S, characterized by a foul odor of rotten eggs; it is a poisonous, corrosive, and flammable gas.