Module 6 Exam.docx - Exam Page 1 A new drug is introduced...

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Exam Page 1 A new drug is introduced that is supposed to reduce fevers. Tests are done with the drug. The drug is given to 60 people who have fevers. It is found that the mean time that it takes for the fever to get back to normal for this test group is 350 minutes with a standard deviation of 90 minutes. Find the 80% confidence interval for the mean time that the drug will take to reduce all fevers for all people. s 90
minutes. Find the 80% confidence interval for the mean time that the drug will take to reduce all fevers for all people.
For a 80% confidence level, we look at table 6.1 and find that z = 1.28. When we substitute these values into our equation, we get: When we do the arithmetic on the right and left hand side, we get: 335.13 < μ< 364.87. Exam Page 2

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