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The director of research and development is testing a new drug. She wants to know if there is evidence at the 0 . 0 1

The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.01 level that the drug stays in the system for more than 334 minutes. For a sample of 87 patients, the mean time the drug stayed in the system was 340 minutes. Assume the variance is known to be 529.
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