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

question 55

Multiple Choice

The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 15.Given a class with 25 students,what is the probability that the class' average IQ score is between 85 and 115?

• A)0.4987
• B)3.00
• C)0.0026
• D)0.9974

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Definitions:

Signal Detection Tasks

Tasks designed to measure the ability to differentiate between information-bearing patterns (signals) and random or irrelevant patterns (noise) under conditions of uncertainty.

Correct Rejections

In signal detection theory, instances where an individual correctly identifies the absence of a signal.

Yea-Sayers

Individuals who tend to agree with or affirm propositions without significant criticism or skepticism, often to maintain harmony or avoid conflict.

Sensory Information

Data received by the senses (sight, hearing, touch, taste, and smell) that is then processed by the brain.