In a study of the relationship between birth order and college success, an investigator found that127in a sample of180college graduates were firstborn or only children. In a sample of 100 nongraduates of comparable age and socioeconomic background, the number of firstborn or only children was57. Estimate the difference between the proportions of firstborn or only children in the two populations from which these samples were drawn(p₁p₂).Use a 90% confidence interval. (Usep₁andp₂for the proportions of firstborn or only children who were college graduates and nongraduates, respectively. Round your answers to three decimal places.)

_______ to ________