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Social reforms are normally initiated as a result of statistical analyses of factors such as crime rates and poverty levels etc. Large-scale population can result from projections devised by statisticians. Manufacturers can provide better products at lower costs by using statistical control tools, such as control charts. Diseases are controlled through analyses designed to anticipate epidemics. Endangered species of fish and other wildlife are protected through regulations and laws that react to statistical estimates of changeling population sizes. Through statistical analyses of fatality rates, legislators can better justify laws, such as those governing air pollution, auto inspections, sea belt and airbag use, and drunk driving.