Vol. 167, No. 4). Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effec- tiveness of the garlic treatment?
Vol. 167, No. 4). Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effec- tiveness of the garlic treatment?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Testing Hypotheses. In Exercises 13–24, assume that a simple random sample has been
selected and test the given claim. Unless specified by your instructor, use either the P-value
method or the critical value method for testing hypotheses. Identify the null and alternative
hypotheses, test statistic, P-value (or range of P-values), or critical value(s), and state the
final conclusion that addresses the original claim.
Transcribed Image Text:15. Garlic for Reducing Cholesterol In a test of the effectiveness of garlic for lowering
cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before
and after the treatment. The changes (before minus after) in their levels of LDL cholesterol
(in mg/dL) have a mean of 0.4 and a standard deviation of 21.0 (based on data from “Effect
of Raw Garlic vs Commercial Garlic Supplements on Plasma Lipid Concentrations
with Moderate Hypercholesterolemia," by Gardner et al., Archives of Internal Medicine,
Vol. 167, No. 4). Use a 0.05 significance level to test the claim that with garlic treatment, the
mean change in LDL cholesterol is greater than 0. What do the results suggest about the effec-
tiveness of the garlic treatment?
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