A study was conducted where 36 patients were randomly assigned to use one of the three over-the-counter pain medications and were asked how long the medicine provided pain relief (rounded to the nearest hour). The data is provided in Table 11.19. Using a nonparametric test, determine if there is a difference in the number of hours of pain relief provided by the type of over-the-counter medication.

Table 11.19

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Number of Hours of Pain Relief by the Type of Over-the- Counter Medication Aspirin 4 Acetaminophen Ibuprofen 6 5 3 5 6578 8 9 7 4 TH 4 8 6 5 9 4 7 6 5 8 8 4 4 7 5 7 7 6 4 8 8 4 9