Twenty years ago, a very famous psychologist specializing in marriage counseling authored a book detailing the way in which she believed spouses should communicate. She is now interested in theproportion of all couples who bought her book who stayed together. For a random sample of250

couples who bought her book, she found that207

of them stayed together. Based on this, compute a90

%

confidence interval for the proportion of all couples who bought her book who stayed together. Then complete the table below.