Excedrin or Tylenol? In a study to comparethe effects of two pain relievers it was found
Chapter 8, Problem 65(choose chapter or problem)
Excedrin or Tylenol? In a study to comparethe effects of two pain relievers it was found that ofn1 200 randomly selected individuals who used thefirst pain reliever, 93% indicated that it relieved theirpain. Of n2 450 randomly selected individuals who used the second pain reliever, 96% indicated that itrelieved their pain.a. Find a 99% confidence interval for the difference inthe proportions experiencing relief from pain forthese two pain relievers.b. Based on the confidence interval in part a, is theresufficient evidence to indicate a difference in theproportions experiencing relief for the two painrelievers? Explain.
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