7.47. A recent study14 considered whether greater levels of TV watching by teenagers were associated with a greater likelihood of committing aggressive acts over the years. The researchers randomly sampled 707 families in two counties in northern New York State and made follow-up observations over 17 years. They observed whether a sampled teenager later conducted any aggressive act against another person, according to a self report by that person or by their mother. Of 88 cases with less than 1 hour per day of TV watching, 5 had committed aggressive acts. Of 619 cases with at least 1 hour per day of TV, 154 had committed aggressive acts.

Analyze these data, summarizing your analyses in a short report.