What is the the lower and upper limits

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Twenty years ago, a very famous psychologist specializing in marriagecounseling 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 of 225 couples who bought her book, she found that 191 of them stayed together.Based on this, compute a 90% confidence interval for the proportionof all couples who bought her book who stayed together. Carrying intermediate computations at least 3 decimal places what is the the lower and upper limits of the 90% confidence interval?

Reference no: EM131152853

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