A regression of bwghti (birth weight of baby i, in grams) on drinki (average number of alcoholic drinks per week consumed by i's mother during pregnancy) gave the following estimates: stack b w g h t subscript i with hat on top equals 3 comma 409.7 minus 39.4 d r i n k subscript i italic comma italic space N equals 1 comma 717 Fill in the correct numbers in blanks 1 and 2 and input 'less' or 'more' in blank 3: The expected birth weight of a baby whose mother didn't drink during pregnancy is grams. A mother who drinks one alcoholic beverage per day more during pregnancy than another mother is expected to give birth to a baby who weighs grams than the other mother's baby