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8. The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. New Drug (n=75) 182.0 (24.5) 78.0% Placebo (n=75) 206.3 (21.8) 65.0% Total Sample Mean (SD) Total Serum Cholesterol |% Patients with Total Cholesterol < 200 (n=150) 194.15 (23.2) 71.5% a) Generate the 95% confidence interval for the difference in mean total cholesterol levels between treatments

8. The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. New Drug (n=75) 182.0 (24.5) 78.0% Placebo (n=75) 206.3 (21.8) 65.0% Total Sample Mean (SD) Total Serum Cholesterol |% Patients with Total Cholesterol < 200 (n=150) 194.15 (23.2) 71.5% a) Generate the 95% confidence interval for the difference in mean total cholesterol levels between treatments

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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8. The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. New Drug (n=75) 182.0 (24.5) Placebo (n=75) 206.3 (21.8) Total Sample (n=150) 194.15 (23.2) Mean (SD) Total Serum Cholesterol % Patients with Total Cholesterol < 200 78.0% 65.0% 71.5% a) Generate the 95% confidence interval for the difference in mean total cholesterol levels between treatments b) Generate a 95% confidence interval for the difference in proportions of all patients with total cholesterol < 200. c) How many patients would be required to detect the difference in proportions observed in the current study with 80% power. A new investigation will be enrolling subjects to demonstrate the efficacy of the drug in individuals with high cholesterol at an early age. A two-sided test is planned at a = 0.05
Transcribed Image Text:8. The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. New Drug (n=75) 182.0 (24.5) Placebo (n=75) 206.3 (21.8) Total Sample (n=150) 194.15 (23.2) Mean (SD) Total Serum Cholesterol % Patients with Total Cholesterol < 200 78.0% 65.0% 71.5% a) Generate the 95% confidence interval for the difference in mean total cholesterol levels between treatments b) Generate a 95% confidence interval for the difference in proportions of all patients with total cholesterol < 200. c) How many patients would be required to detect the difference in proportions observed in the current study with 80% power. A new investigation will be enrolling subjects to demonstrate the efficacy of the drug in individuals with high cholesterol at an early age. A two-sided test is planned at a = 0.05
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