THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 14

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Candidates for employment at a city fire department are required to take a written aptitude test.Scores on this test are normally distributed with mean 260 and standard deviation 51.A random sample of nine test scores was taken.
-What is the probability that the sample mean score is more than 230?

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Definitions:

Environmental Assessments

Evaluations conducted to understand the environmental impacts of proposed projects or developments before they proceed.

Clean Air Act Amendments

Changes made to the Clean Air Act, a major environmental law in the U.S. aimed at reducing air pollution and protecting air quality.

NAAQS

The National Ambient Air Quality Standards, which are the limits set by the United States Environmental Protection Agency for pollutants considered harmful to public health and the environment.

Council on Environmental Quality

A division of the Executive Office of the President that advises the U.S. president on environmental policies and initiatives.