Examlex
Betty decided to open up a tea shop in the center of town right near a fitness center. She wanted to know which brand of tea would be most popular among health-conscious individuals. She had two of her staff members stand outside the shop and invite everyone exiting the fitness center for a free cup of tea of their choosing. This customer group is known as a
Null Hypothesis
The presumption of no significant difference or association in a set of data, serving as a default position in hypothesis testing until evidence suggests otherwise.
Aluminum Concentrations
The measured levels of aluminum in a given sample or environment.
Test Statistic
A statistic used to estimate the parameter of interest in a statistical hypothesis test.
Kruskal-Wallis Test
A nonparametric statistical test used to compare three or more groups based on ranked data. It is an extension of the Mann-Whitney U test for more than two groups.
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