Module 16 – Introduction to Confidence Intervals (2 of 8 discussion 1) – Mod 16 Group 4

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Module 16 – Introduction to Confidence Intervals (2 of 8 discussion 1) – Mod 16 Group 4

Learn by Doing

Here are the directions, grading rubric, and definition of high-quality feedback for the Learn by Doing discussion board exercises.

Context

A Gallup poll conducted in November of 2011 asked the following question, “What would you say is the most urgent health problem facing this country at the present time?” The choices were access, cost, obesity, cancer, government interference, or the flu. The responses were access (27%), cost (20%), obesity (14%), cancer (13%), government interference (3%), or the flu (less than 0.5%).

The following is an excerpt from the Survey Methods section. “Results for this Gallup poll are based on telephone interviews conducted Nov. 3-6, 2011, with a random sample of 1,012 adults ages 18 and older, living in all 50 U.S. states and the District of Columbia. For results based on a total sample of national adults, one can say with 95% confidence that the maximum margin of sampling error is ±4 percentage points.”

Prompt

If we accept the maximum margin of sampling error provided above, find a 95% confidence interval to estimate the percentage of U.S. adults who feel that access to healthcare is the most urgent health problem facing this country. Interpret your interval in context.

Content by the Open Learning Initiative (Links to an external site.) and licensed under CC BY (Links to an external site.).

To view the grading rubric for this discussion board, click on menu icon (three vertical dots) and then select show rubric. Please note, if viewing the course via the Canvas mobile app the rubric does not appear on this page.

Tips for Success

• Did you make a mistake in your initial post? No problem! Just be sure to reply to yourself and note any corrections that need to be made.
• You are required to reply to two of your peers in this discussion; don’t forget to complete this requirement of the activity or you will lose points. Provide high-quality feedback to your peers.

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