Case Study 11 Relationship between respiratory function(measured by forced expiratory volume, FEV) and smoking. Rosner(Rosner and et al., 1999) presents the investigation concerns measuring the subjects' respiratory function, the subjects themselves smoke. This new data analysis, which is the one as well as whether students are asked to carry out, is not a longitudinal study of second-hand smoking effects, but a cross- sectional subset from the Tager studies for investigating the relationship between subjects FEv and their current smoking status. In this problem the measured outcome of interest is forced expiratory volume breath. The data recorded in the dataset include the following: FEV(liters), AGE(years), HEIGHT(inches), GENDER(MF), SMOKE(Y/N). (Note that an unencumbered version of this dataset was given in Kahn(2003).)