please explain how to obtain lower and upper bound

10.2.23 Question Help V t: Several years ago. 43% of parents who had children in grades K12 were satised with the quality of education the students receive. A recent poll asked 1,155 parents who have children in grades K12 if they were satised with the quality of education the students receive. Of the 1,155 surveyed, 493 indicated that they were satised. Construct a 99% condence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? H0: p = 0.43 versus H1: p # 0.43 (Round to two decimal places as needed.) Use technology to find the 99% condence interval. The lower bound is The upper bound is . (Round to two decimal places as needed.)