Statistics Solutions

Solution: Antipyretics trial. A trial evaluated the fever—reducing effects of three substances. Study subjects were adults seen in an emergency room with

Question: Antipyretics trial. A trial evaluated the fever—reducing effects of three substances. Study subjects were adults seen in an emergency room with diagnoses of flu with body temperatures between 100.0°F to IOO.9°F. The three treatments (aspirin, ibuprofen, and acetaminophen) were assigned randomly to study subjects. Body temperatures were reevaluated 2 hours after administration of treatments. Table 3.14 lists the data.

  1. Explore these data with side-by-side boxplots. Discuss your findings.
  2. Calculate the mean and standard deviation of each group.
  3. Complete an ANOVA for the problem. What do you conclude?
  4. Conduct post hoc comparisons with the LSD method. Which groups differ significantly at \(\alpha=0.05\) ?

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