# Question

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.

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.

## Answer to relevant Questions

Explain what each phrase means in the context of inferences for a population proportion. a. Number of successes b. Number of failures Suppose that you want to find a 95% confidence interval based on independent samples for the difference between two population proportions and that you want a margin of error of at most 0.01. a. Without making an educated ...Distribution: 0.2, 0.1, 0.1, 0.3, 0.3; Observed frequencies: 29, 13, 5, 25, 28; Significance level = 0.10 We have provided a distribution and the observed frequencies of the values of a variable from a simple random sample ...Consider two χ2-curves with degrees of freedom 12 and 20, respectively. Which one more closely resembles a normal curve? Explain your answer. The t-table has entries for areas of 0.10, 0.05, 0.025, 0.01, and 0.005. In contrast, the χ2-table has entries for those areas and for 0.995, 0.99, 0.975, 0.95, and 0.90. Explain why the t-values corresponding to these ...Post your question

0