In a population of 100 people, 25 have a history of breast cancer. Six of these people with a history of breast cancer have a BRCA1 mutation. Four people who have never had breast cancer carry a BRCA1 mutation. Find the odds ratio of having a history of breast cancer for people with a BRCA1 mutation compared to people without a BRCA1 mutation.A pharmaceutical company is interested in establishing the effectiveness of a new drug treatment for congestive heart failure. A clinical study of 100 male patients was conducted. The study involved measuring patients' exercise capacity (in minutes) over four weeks. The collected data was assumed to be normally distributed and yielded a mean exercise capacity of 2.27 minutes. The previous drug treatment of the same sample produced an average mean of 2.0 minutes. The standard deviation of the differences was 1.51. Using a 0.05 significance level, test the claim that the new treatment improves exercise capacity compared to the old treatment. What conclusion can we make about the research hypothesis