Answer Happy

Assume that you have a dataset containing 3,000 observations on the variables described below. Variable Description Birthrweight and Smoking 1 birthweight birth weight of infant (in grams) 2 smoker indicator equal to one if the mother smoked during pregnancy and zero, otherwise. Mother's Attributes 3 age age 4 educ years of educational attainment (more than 16 years coded as 17) S unmarried indicator =l if mother is unmarried This Pregnancy 6 alcohol indicator-1 if mother drank alcohol during pregnancy 7 drinks number of drinks per week 8 triprel indicator 1 if i" prenatal care visit in 1 trimester 9 tripre 2 indicator-1 if 1* prenatal care visit in 2nd trimester 10 tripre3 indicator-1 if I" prenatal care visit in 3e trimester 11 tripreo indicator=l if no prenatal visits 12 nprevist total number of prenatal visits

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