Discuss the below:
Q: A recent poll (fictitious) reports that President Obama's "approval rating" is 52% and a statement says, "This poll has an error rate of 3%." The poll sampled 1300 people. (Note: The "3%" is the "margin of error." There is no computation of the confidence interval formula needed).
This is an application of a confidence interval on a proportion.
Compute the confidence interval on the proportion using the data given. How does the "3%" come about?
Interpret the confidence interval. Do the majority of the people in the country, based on the sample (and assume it is a good sample) approve of the President's actions? If so, why? f no, why?
What if the percent approval was 58% with the same margin of error?
What if the percent approval was 46% with the same margin of error?