The data in the accompanying bar graph are from a random sample of 859 adults. The graph shows four proposals to reduce gun violence in a country and the Proposals to Reduce Gun Violence percentage of surveyed adults who favored each of these proposals. Complete parts (a) and (b) below. 30- 69% 60- 58% 57% 54% Percentage of Adults Favoring the Proposal 40- 20- Required. Ban on Ban on Restrict amount or gun registration high-capacity assault type of ammunition magazines weapons purchases a. Find the margin of error for this survey. The margin of error is +%. (Do not round until the final answer, Then round to the nearest tenth as needed.) b. Write a statement about the percentage of adults in the country's population who favor a ban on high capacity magazines to reduce gun violence. There is 95% confidence that between |% and % of all adults in the country favor a ban on. (Use ascending order. Round to the nearest tenth as needed.)