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.
i. What is the probability that a person would score 130 or more on the test?
ii. You enrolled in a class of 25 students. What is the probability that the class' average IQ exceeds
130?

• A) 0.0228, 0.4987
• B) 0.4772, 0.300
• C) 0.4772, 0.0026
• D) 0.0228, approximately zero
• E) None of the choices are correct

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Definitions:

Complement

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Public Service Announcements

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Compulsory advisories placed on products, such as cigarettes, to inform consumers of health risks.

Demand Curve

A graphical representation of the relationship between the price of a good and the quantity demanded for a given period.