Question: a sample consists of 1388 observations where the unit of...
A sample consists of 1,388 observations, where the unit of observation is an individual. packsi is the number of packs of cigarettes woman i smoked per day while pregnant, and bwghti is the birth weight (in ounces) of the woman’s child. Given the information found in the attached STATA output,
(1) The population model implied by the regression output is
(2) In the space below, provide a variable that could possibly affect your dependent variable, but was not accounted for in the simple linear regression model (i.e. is in the u term). Make sure to clearly define your variable and briefly explain why you believe it affects your dependent variable.