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Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 5.4 - Problem 7
Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 5.4 - Problem 7

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# In experiments to determine the effectiveness of drugs such as anti-fungal ointments

ISBN: 9780073401331 38

## Solution for problem 7 Chapter 5.4

Statistics for Engineers and Scientists | 4th Edition

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Problem 7

In experiments to determine the effectiveness of drugs such as anti-fungal ointments that are applied to the skin, the concentration of the drug in a patients skin must be measured. The article Determining Bioequivalence of Topical Dermatological Drug Products by Tape-Stripping (W. Navidi, A. Hutchinson, et al., Journal of Pharmacokinetics and Pharmacodynamics, 2008:213220) describes an improved method of measuring that is designed to ensure that all the drug in the skin is recovered. Assume that in an experiment using the old method, the mean amount of drug recovered from a sample of 49 patients was 105 ng with a standard deviation of 20 ng, and that in an experiment using the new method the mean amount of drug recovered in a sample of 35 patients was 117 ng with a standard deviation of 15 ng. Find a 98% confi- dence interval for the difference in the mean amounts recovered between the two methods.

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1 HSA 3111 Exam #4 (Final Exam) Study Guide Chapter 12: Cost, Access, and Quality Multiple Choice Questions 1) What does the Consumer Price Index (CPI) measure a. Medical inflation b. General inflation c. Health care expenditures d. Overall government expenditures 2) What is Gross Domestic Product (GDP) a. A measure of all the goods and services produced by a nation in a given year b. A measure of all the goods and services produced by a nation in a given year, divided by the population

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