Parameter Estimation + Confidence Interval + Margin of Error Proportions Problem#1 19. Lipitor The drug Lipitor™ is meant to lower cholesterol NW levels. In a clinical trial of 863 patients who received 10-mg doses of Lipitor daily, 47 reported a headache as a side effect. (a) Obtain a point estimate for the population proportion of Lipitor users who will experience a headache as a side effect. (b) Verify that the requirements for constructing a confi- dence interval about p are satisfied. (c) Construct a 90% confidence interval for the population proportion of Lipitor users who will report a headache as a side effect. (d) Interpret the confidence interval. Answer: (a) 0.054 (b) sample < 5% of population (c) 0.043 & 0.066 (d) 90% confident that people who get headache is between 0.043 & 0.066
Parameter Estimation + Confidence Interval + Margin of Error Proportions Problem#1 19. Lipitor The drug Lipitor™ is meant to lower cholesterol NW levels. In a clinical trial of 863 patients who received 10-mg doses of Lipitor daily, 47 reported a headache as a side effect. (a) Obtain a point estimate for the population proportion of Lipitor users who will experience a headache as a side effect. (b) Verify that the requirements for constructing a confi- dence interval about p are satisfied. (c) Construct a 90% confidence interval for the population proportion of Lipitor users who will report a headache as a side effect. (d) Interpret the confidence interval. Answer: (a) 0.054 (b) sample < 5% of population (c) 0.043 & 0.066 (d) 90% confident that people who get headache is between 0.043 & 0.066
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:Parameter Estimation + Confidence Interval + Margin of Error
Proportions
Problem#1
19. Lipitor The drug LipitorTM is meant to lower cholesterol
NW levels. In a clinical trial of 863 patients who received
10-mg doses of Lipitor daily, 47 reported a headache as a
side effect.
(a) Obtain a point estimate for the population proportion of
Lipitor users who will experience a headache as a side
effect.
(b) Verify that the requirements for constructing a confi-
dence interval about p are satisfied.
(c) Construct a 90% confidence interval for the population
proportion of Lipitor users who will report a headache
as a side effect.
(d) Interpret the confidence interval.
Answer: (a) 0.054 (b) sample < 5% of population (c) 0.043 & 0.066
(d) 90% confident that people who get headache is between 0.043 & 0.066
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