A researcher compares the BMI of two populations of individuals
A researcher compares the BMI of two populations of
individuals from different socioeconomic backgrounds and finds that the proportion of individuals considered obese and from a poor background is .37 (n= 112), and the proportion of individuals considered obese and from an affluent background is .27 (n= 87); a 95% confidence interval for the risk difference for obesity among members of the poor population compared to the affluent population is (-0.03, 0.23).