Elementary Statistics Using the TI-83/84 Plus Calculator, Books a la Carte Edition (4th Edition)
4th Edition
ISBN: 9780321953902
Author: Mario F. Triola
Publisher: PEARSON
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Textbook Question
Chapter 7.2, Problem 28BSC
Critical Thinking. In Exercises 17-28, use the data and confidence level to construct a confidence
Medication Usage In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least one prescription medication (based on data from "Use of Prescription and Over-the-Counter Medications and Dietary Supplements Among Older Adults in the United States,” by Qato et al.. Journal of the American Medical Association. Vol. 300, No. 24).
- a. How many of the 3005 subjects used at least one prescription medication?
- b. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication.
- c. What do the results tell us about the proportion of college students who use at least one prescription medication?
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Elementary Statistics Using the TI-83/84 Plus Calculator, Books a la Carte Edition (4th Edition)
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