Examlex
On the basis of temperature, the layers of the atmosphere from the lowest layer to the highest are the thermosphere, mesosphere, stratosphere, and troposphere.
Critical Value
A threshold value in hypothesis testing that defines the boundary for rejecting the null hypothesis; it is determined by the chosen significance level.
Null Hypothesis
In statistics, it posits that there is no effect or difference among the groups being studied or variables being compared.
Alpha
In hypothesis testing, alpha level represents the threshold for rejecting the null hypothesis, often set at 0.05 or 5% risk of Type I error.
T-statistic
A statistic calculated from a dataset to compare the mean of the data to a hypothetical mean as part of a t-test.
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