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Solve using the principle of zero products.
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Wilcoxon Signed Rank
A statistical test that doesn't rely on parameter assumptions, designed for comparing two related samples, matched pairs, or repeated measures on a single sample to determine if there's a difference in their mean ranks across populations.
Matched Pairs
A study design where subjects are paired based on certain criteria to compare two treatments or conditions, with each subject in the pair receiving a different treatment.
Interval Data
A type of data with ordered values where the difference between any two values is meaningful, but it lacks a true zero point.
Two Independent Sample T-test
A statistical method used to compare the means of two independent samples to determine if there is a significant difference between them.
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