Antibiotics in Infancy and Weight A Canadian longitudinal study examines whether giving antibiotics in infancy increases the likelihood that the child will be overweight later in life. The children were classified as having received antibiotics or not during the first year of life and then being overweight or not at 9 years old. The study included 616 children, and the results are shown in the table below. Overweight |Not Overweight Total Antibiotics 144 294 438 No Antibiotics 37 141 178 Total 181 435 616 Round your answers to three decimal places. (a) What proportion of all children in the study were given antibiotics during the first year of life? i (b) What proportion of all children in the study were classified as overweight at age 9