Examlex
An atom of helium (⁴₂He) has
Null Hypothesis
The hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.
Degrees of Freedom
The number of independent values or quantities which can vary in the calculation of a statistic, often linked to the sample size.
Significance Level
The significance level, often denoted as alpha, is the probability of rejecting the null hypothesis in a statistical test when it is actually true, representing the risk of a type I error.
Type I Error
The error made when a true null hypothesis is incorrectly rejected, often referred to as a "false positive."
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