Provide a 95% confidence interval for the true correlation among Caucasian boys ( 1 ) and African
Question:
Provide a 95% confidence interval for the true correlation among Caucasian boys (ρ1) and African American boys (ρ2), respectively?
Pediatrics, Cardiovascular Disease
An important area of investigation is the development of strategies for altering cardiovascular risk factors in children. Low-density lipoprotein (LDL) cholesterol has consistently been shown to be related to cardiovascular disease in adults. A study was conducted in Bogalusa, Louisiana, and Brooks County, Texas, to identify modifiable variables that are related to LDL cholesterol in children [15]. It was found that the correlation coefficient between LDL cholesterol and ponderal index [weight (kg)/height3 (cm3)], which is a measure of obesity, was .28 among 903 Caucasian boys and .14 among 474 African American boys.
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