The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.05 level that the medicine relieves pain in more than 388 seconds. For a sample of 67 patients, the meantime in which the medicine relieved pain was 390 seconds. Assume the standard deviation is known to be 17. Step 1 of 5 :   Enter the hypotheses:

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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 0.05 level that the medicine relieves pain in more than 388 seconds. For a sample of 67 patients, the meantime in which the medicine relieved pain was 390 seconds. Assume the standard deviation is known to be 17.

Step 1 of 5 :  

Enter the hypotheses:

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