Examlex
An emission spectrum results when light emitted by glowing gas is passed through a prism.
Null Hypothesis
A statement in statistical hypothesis testing that assumes no effect or no difference between phenomena or populations.
Level of Risk
The probability or chance of experiencing harm or loss.
One-sample Z-test
A statistical test used to determine whether there is a significant difference between the mean of a sample and a known or hypothesized population mean.
Mean of a Sample
The average value obtained by dividing the sum of all observations in a sample by the number of observations.
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