A problem of interest to health administrators is to determine the effects of smoking (cigs) during pregnancy on infant health.

A problem of interest to health administrators is to determine the effects of smoking (cigs) during pregnancy on infant health. One measure of infant health is birth weight (bwght in ounces); a birth weight that is too low can put an infant at risk of contracting various illnesses. To look at this question you write down the following simple linear regression equation: bwght=β0+β1cigs+error