MATH 110 MODULE 6 EXAM.| PORTAGE LEARNING
MATH 110 MODULE 6 EXAM.| PORTAGE LEARNING Module 6 Exam 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. Case 1: large pop and large sample xbar - z(s√n) u xbar + z(s√n) n = 60 xbar = 350 s = 90 80% confidence interval (z) = 1.28 350 - 1.28(90√60) u 350 + 1.28(90√60) = 335.128, 364.872 335.13 u 364.87 Answer Key
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math 110 module 6 exam| portage learning module 6 exam 2610 128560 √40 √415 40415 1 lt u lt 2610 128560 √40 √415 40415 1 250213
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271787 250213