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According to the empirical rule,if the data form a "bell-shaped" normal distribution,percent of the observations will be contained within 2 standard deviations around the arithmetic mean.
Carbon Monoxide
A colorless, odorless, and toxic gas produced by the incomplete combustion of carbon-containing materials.
Storm-Water Systems
Infrastructure designed to manage and redirect rainwater runoff to prevent flooding and water pollution.
Physical Health
A state of well-being in which the body is free from illness, injury, and pain, often as a result of exercise and good nutrition.
Pollution
The presence or introduction into the environment of substances or things that have harmful or poisonous effects.
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