According to a recent survey of 1400 people, 63% feel that the president is doing an acceptable job. We are interested in the population proportion of people who feel the president is doing an acceptable job. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) Construct a 90% confidence interval for the population proportion of people who feel the president is doing an acceptable job. (i) State the confidence interval. (Round your answers to four decimal places.) (:LE) (ii) Sketch the graph. 0: a i :1 :i F (iii) Calculate the error bound. (Round your answer to four decimal places.) E