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Since most purging gases are inert, there is no danger if they leak in a confined space.
Significance Level
The likelihood of mistakenly dismissing the null hypothesis, typically represented by alpha, when in truth it holds.
Null Hypothesis
A statement or hypothesis that assumes no statistical significance or effect exists in a set of observations or experiment.
Two-Tailed Test
A hypothesis test in which the critical area for a rejection of the null hypothesis is in both tails of the probability distribution, allowing for testing of deviations in both directions.
Population Mean
The average of all the values in a population, representing the central tendency of the total population.
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