The Intelligence Quotient (IQ) Test Scores Are Normally Distributed with a Mean

question 51

Multiple Choice

The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 15. What is the probability that a person would score between 85 and 115?

• A) 0.3413
• B) 0.6826
• C) 1.00
• D) Very likely

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Definitions:

Natural Selection

A process by which species adapt to their environment as individuals with advantageous traits survive and reproduce more successfully than others.

Evolution

The process through which species undergo genetic changes over generations, leading to the development of new species.

Common Ancestor

An ancestral form or species from which two different species or groups have evolved.

Humans

A species of bipedal primates, scientifically known as Homo sapiens, characterized by their ability to use complex language, make tools, and form complex social structures.