Examlex
A Wilcoxon rank sum test for comparing two populations involves two independent samples of sizes 15 and 20. The un-standardized test statistic (that is the rank sum) is T = 210. The value of the standardized test statistic z is:
Climate Change
Recent changes in the Earth’s climate; evidence suggests that this is primarily due to human influence, including the increased release of greenhouse gases.
Organic Chemicals
Compounds containing carbon that are found in or produced by living organisms.
Ozone Depletion
The thinning and reduction of the ozone layer in the Earth's atmosphere, primarily caused by the release of chemical compounds containing bromine and chlorine.
Agricultural
Relating to the science, art, and practice of cultivating land, producing crops, and raising livestock.
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