Confidence interval
Progress Check
Use this activity to assess whether you and your peers can:
Calculate a 90% and a 95% confidence interval.
Relate the interval width of a confidence interval to its margin of error (MOE).
- Compare interval widths of two confidence intervals and draw conclusions.
- Directions
- Use the drop-down menu to learn about the three steps needed to complete this assignment.
Prompt
Harris Interactive® conducted a poll of American adults in August of 2011 to study the use of online medical information. Of the 1,019 randomly chosen adults, 60% had used the Internet within the past month to obtain medical information.
Use the results of this survey to create an approximate 95% confidence interval estimate for the percentage of all American adults who have used the Internet to obtain medical information in the past month.
Calculate the 90% confidence interval.
Which confidence interval has the smaller margin of error? Why does this make sense?
Which confidence interval is more likely to contain the true percentage of all American adults who have used the Internet to obtain medical information in the past month? Briefly explain your reasoning.
Collepals.com Plagiarism Free Papers
Are you looking for custom essay writing service or even dissertation writing services? Just request for our write my paper service, and we'll match you with the best essay writer in your subject! With an exceptional team of professional academic experts in a wide range of subjects, we can guarantee you an unrivaled quality of custom-written papers.
Get ZERO PLAGIARISM, HUMAN WRITTEN ESSAYS
Why Hire Collepals.com writers to do your paper?
Quality- We are experienced and have access to ample research materials.
We write plagiarism Free Content
Confidential- We never share or sell your personal information to third parties.
Support-Chat with us today! We are always waiting to answer all your questions.
