Examlex
A material is considered hazardous if it causes illness, injury, or death or pollutes water, air, or land.
Degrees of Freedom
The number of independent values or quantities which can be assigned to a statistical distribution without violating any constraint.
Equal-variances T-test
A statistical test used to compare the means of two groups, assuming that both groups have the same variance.
Normal Populations
Populations in which the distribution of data points follows a normal distribution curve, important in many statistical methods.
Population Means
The average of a set of numerical values from the entire population being studied.
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