In an August 2012 Gallup survey of 1012 randomly selected U.S. adults (age 18 and over), 55% said that they were dissatisfied with the quality of education students receive in kindergarten through grade 12. They also report that the "margin of sampling error is plus or minus 4%" Find and interpret a 95% confidence interval for a parameter of interest. Interpret it in terms of dissatisfaction in the quality of education students receive. Use two decimal places in your answer. Can we be reasonably sure that the majority of US adults were dissatisfied with the quality of education students receive in kindergarten through grade 12?
Added by Stephen T.
Step 1
This is simply the difference between the percentage of respondents who answered "satisfied" or "dissatisfied" and the percentage who answered "very dissatisfied." In this case, the margin of sampling error is plus or minus 4%. Show more…
Show all steps
Close
Your feedback will help us improve your experience
Qudsiya Anis and 76 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
in an August 2018 Gallup survey of 1,012 randomly selected U.S adults (age 18 and over), 53% said that they were dissatisfied with the quality of education students receive in kindergarten through grade 12. (standard error= 0.0157) Construct a 90% confidence interval for the proportion of U.S adults who are dissatisfied with the quality of education students receive in kindergarten through grade 12. Provide an interpretation of your interval in the context of this situation.
Jerelyn N.
In a Gallup survey of 1,012 randomly selected U.S. adults (age 18 and over), 53% said that they were dissatisfied with the quality of education students receive in kindergarten through grade 12. Use the normal distribution to construct and interpret a 90% confidence interval for the proportion of U.S. adults who are dissatisfied with the education students receive in kindergarten through grade 12. The standard error is SE
Danielle F.
Several years ago, 38% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,085 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,085 surveyed, 464 indicated that they were satisfied. Construct a 90% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. The lower bound is? The upper bound is?
David N.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD