Examlex
The test statistic to test hypotheses about the population variance has a chi-squared distribution with n -1 degrees of freedom when the population random variable has a(n)____________________ distribution.
Compound
A substance formed from two or more elements chemically united in fixed proportions.
Atom
The basic unit of a chemical element, consisting of a nucleus of protons and neutrons, and electrons orbiting the nucleus.
PH
A scale used to specify the acidity or basicity of an aqueous solution, with values ranging from 0 (most acidic) to 14 (most basic).
Benedict's Test
A chemical test used to detect reducing sugars by turning a range of colors when heated with a sample.
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