Examlex
Use the Wilcoxon rank sum test on the data below to determine at the 10% significance level whether the two population locations differ.
Sample 1: 17 20 18 25 16 22
Sample 2: 17 25 33 38 15 26 21
Null Hypothesis
The default position that there is no relationship between two measured phenomena or no association among groups.
Alternative Hypothesis
In hypothesis testing, the hypothesis that contradicts the null hypothesis, usually suggesting that a new theory or intervention has an effect.
P-value
A statistical measure that indicates the probability of the observed data, or more extreme, assuming that the null hypothesis is true.
Null Hypothesis
A statement or hypothesis that assumes no statistical significance exists in a set of given observations, serving as the default assumption to be tested.
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