Canvas D Question 1 16 pts A national health survey of 1200 U.S. adults (selected randomly) during 2006 revealed that 635 had never smoked cigarettes. Answer the following questions. [3+3+3+4+3 pts.] (a) Find the point estimate of the population proportion of U.S. adults that never smoked cigarettes. (b) Find the margin error of this estimate for a 90% confidence interval. (c) Construct a 90% confidence interval for population proportion (d) State and check the assumptions needed for the interval in (b) to be valid. (e) Give an interpretation of the confidence interval. Edit View Insert Format Tools Table 12pt v Paragraph ~ | B J U A v Q V T V | Q B BV| : DELL W E R in D G H