Statistics: Non-Parametric Tests – #1538

Question: To test a theory that alcohol consumption can have an effect on test scores, a researcher conducts a study 10 adults. Each is given a test. Then for one week, each subject is required to consume a certain amount of alcohol; then he or she is retested. The results are show here. Significance level=0.1, test the claim that alcohol does not affect a person’s test score


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