An Aptitude Test Has a Mean Score of 80 and a Standard

question 133

Multiple Choice

An aptitude test has a mean score of 80 and a standard deviation of 5. The population of scores is normally distributed. What proportion of tests has scores over 90?

• A) .9772
• B) .0228
• C) .9544
• D) .0456

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Definitions:

Environment

The sum of all external conditions and influences affecting the life, development, and survival of organisms.

Political Structure

The organization of government and the distribution of power within a society.

Gender Imbalance

A demographic disparity where the number of individuals of one gender significantly exceeds the number of individuals of the other gender within a population.

China

A country in East Asia, the world's most populous nation.