Comparing Means The baseline characteristics of different
Chapter 9, Problem 9(choose chapter or problem)
Comparing Means The baseline characteristics of different treatment groups are oftenincluded in journal articles. In one study, 49 subjects treated with raw garlic had LDL cholesterolmeasurements with a mean of 151 and a standard deviation of 15, while 48 subjectsgiven placebos had LDL cholesterol measurements with a mean of 149 and a standarddeviation of 14 (based on data from Effect of Raw Garlic vs Commercial Garlic Supplementson Plasma Lipid Concentrations in Adults with Moderate Hypercholesterolemia,by Gardner et al., Archives of Internal Medicine, Vol. 167). Use a 0.05 significance level totest the claim that there is no difference between the mean LDL cholesterol levels of subjectstreated with raw garlic and subjects given placebos. Do both groups appear to be aboutthe same?
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