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# Several years ago, 43 % of parents who had children in grades K-12 were satisfied with the quality of education the students receive.

Hey, I need help solving this problem. Several years​ ago, 43​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,155 parents who have children in grades​ K-12 if they were satisfied with the quality of education the students receive. Of the 1,155 ​surveyed, 495 indicated that they were satisfied. How do I construct a 90​% confidence interval to assess whether this represents evidence that​ parents' attitudes toward the quality of education have changed.

clearly, 0.43 lies between... View the full answer

1 comment
• What are the null and alternative hypotheses?
• dermekoa
• Aug 08, 2018 at 11:17am

﻿ 0 . 4 0 5 ≤ p ≤ 0 . 4 5 3 ﻿ Since ﻿ p = 0 . 4 3 ﻿ lies... View the full answer

﻿ C o n f i d e n c e I n t e... View the full answer

1 comment
• What are the null and alternative hypotheses?
• dermekoa
• Aug 08, 2018 at 11:32am

The   90 ​%  confidence interval is (0.4046, 0.4526). Since,Population... View the full answer

The 90% confidence interval... View the full answer

• Please consider the hypothesises proportion p = 0.43 lies in the confidence interval, therefore we conclude that parents attitude towards quality education not changed.
• ShivOjha
• Aug 08, 2018 at 11:46am
• So how do I determine the null and alternative hypotheses?
• dermekoa
• Aug 08, 2018 at 11:47am
• The null hypothesis is "Parents satisfied with the quality education" and the Alternative hypothesis is "Parents do not satisfied with the quality education".
• ShivOjha
• Aug 08, 2018 at 11:58am

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