Essay
A group of researchers conducted a study to see if intravenous drug users (IDUs) have lower CD4+ cell counts at initiation of antiretroviral therapy compared to non-IDUs. CD4+ cell counts are known to have skewed distributions. Provide the appropriate statistical test along with the corresponding null and research hypotheses for investigating differences in CD4+ cell counts between the two groups.
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A nonparametric test will be the appropr...View Answer
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Correct Answer:
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