If we use IDA to denote the proportion from part (3} and 101'" to denote the proportion from part (4), calculate the difference in proportion being overweight, PgpN between those were exposed to antibiotics and those who weren't. Find the relative risk of being overweight when comparing the antibiotic group to the non antibiotic group. For the antibiotic group, what are the odds for being overweight at age 9? Based on the result of this study, can we say that early exposure to antibiotics causes children to be overweight at age 9