In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today). (a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p. (b) Find a 0.95 confidence interval for . (c) As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified nonsmoker? What is the margin of error based on a 95% confidence interval?