TRY 7.69 Picky Eaters (Example 13) In a 2017 Harris poll conducted for Uber Eats, 438 of 1019 U.S. adults polled said they were "picky eaters." a. What proportion of the respondents said they were picky eaters? b. Find a 95% confidence interval for the population proportion of U.S. adults who say they are picky eaters. c. Would a 90% confidence interval based on this sample be wider or narrower than the 95% interval? Give a reason for your answer. d. Construct the 90% confidence interval. Was your conclusion in part c correct