Atriathlon consisting of swimming, cycling, and running is one of the more strenuous amateur sporting events. an article reports on a research study involving twenty-five male triathletes. maximum heart rate (beats/min) was recorded during performance of each of the three events. for swimming, the sample mean and sample standard deviation were 189.0 and 7.3, respectively. assuming that the heart-rate distribution is (approximately) normal, construct a 98% ci for true mean heart rate of triathletes while swimming. (round your answers to one decimal place.) , beats/min

*a mastectomy is the surgical removal of one or both breasts, either partially of fully. an oophorectomy is the surgical removal of an ovary or ovaries.analyze a woman’s risk of dying of cancer if she carries a mutated brc1 gene.how do heredity and inheritance relate to the data presented in these charts? what data would you need to see in order to draw conclusions about the effectiveness of preventive surgeries? what does the age at diagnosis tell you about the mutation? explain how breast-cancer genes are still present in the population, despite cancer-related surgeries and deaths.