a. Use the data from the Gallup poll to determine and interpret a 95% confidence interval for the percentage of all U.S. adults who think that it is the responsibility of the federal government to make sure all Americans have health care coverage.
b. Find and interpret the margin of error for the poll discussed in part (a).
c. Use the data from the Associated Press/Yahoo News poll to decide, at the 5% significance level, whether a majority of U.S. adults support a single-payer healthcare system. How strong is the evidence in favor of majority support?
d. Without doing a confidence-interval computation, but rather by referring to the information provided on page 443 for the poll discussed in part (c), get a 95% confidence interval for the proportion of U.S. adults who support a single-payer healthcare system.
e. Use the data from the Indiana University School of Medicine poll to find and interpret a 99% confidence interval for the percentage of all U.S. doctors who support a “Medicare for All”/single-payer healthcare system
f. Obtain and interpret the margin of error for the poll discussed in part (e).
As we noted on page 442, one of the most important and controversial challenges facing the United States is healthcare. We presented three polls about the views of Americans on healthcare, including those on universal and single-payer healthcare. Now, you are to perform statistical analyses on those polls to see for yourself the feelings of all Americans and their doctors on healthcare choices.