Do not use non parametric tests, like chi-square

A group of scientists has gathered data to verify whether a daily intake of small doses of aspirin could prevent death from colon cancer. The data they obtained is shown in the lowing table: Cancel cer deaths Group Yes No Total placebo 347 11,188 11,535 aspirine 327 13,708 14,035 According to the data obtained, is having ingested aspirin independent of having died from colon can cer