Question 7: (Total Points = 10) Suppose we want to design a new study to assess the implications of childhood obesity on poor health outcomes in adulthood. Answer the following questions. a. How many normal and overweight/obese children are required to ensure 80% power to detect an 8% difference in incident cardiovascular disease between groups? Assume that approximately 4% of normal- weight children will develop cardiovascular disease by age 50 and that 10% of overweight/obese children will develop cardiovascular disease by age 50 and that a two-sided test with a = 0.05 will be used. b. How many overweight/obese and normal children should be enrolled in the study, assuming that 15% will be lost to follow-up over the course of the study