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The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.02 level that the

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The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.02 level that the medicine relieves pain in less than 339 seconds. For a sample of 56 patients, the mean time in which the medicine relieved pain was 332 seconds. Assume the standard deviation is known to be 21 . Step 4 of 5: Enter the decision rule

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