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Define sampling distribution of the difference between sample means.
Sulfur Oxide
A group of chemical compounds that are a combination of sulfur and oxygen, often associated with air pollution and acid rain.
Toxic Air Pollutants
Harmful substances in the air that pose health risks to humans and the environment, regulated under environmental laws.
EPA
The Environmental Protection Agency, a U.S. federal agency responsible for protecting human health and the environment by writing and enforcing regulations.
Asbestos
A group of naturally occurring mineral fibers used in building materials that are hazardous to health when inhaled.
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