A New York Times article reported according to the results of a poll that "Mr. Biden was ahead of Mr. Trump in Pennsylva
Posted: Wed Dec 15, 2021 10:20 am
A New York Times article reported according to the results of a
poll that "Mr. Biden was ahead of Mr. Trump in Pennsylvania by
seven points, 51 percent to 44 percent, and in Ohio by five points,
48 percent to 43 percent." The article mentioned the margin of
error for Biden's support in Pennsylvania was 2.7
percent. Show all of your work for the following
questions.
(i) The confidence interval for the true proportion of all
voters who support Biden in Pennsylvania is...
(ii) Suppose the confidence level was 95% in the article, how
many people did the poll survey in Pennsylvania?
poll that "Mr. Biden was ahead of Mr. Trump in Pennsylvania by
seven points, 51 percent to 44 percent, and in Ohio by five points,
48 percent to 43 percent." The article mentioned the margin of
error for Biden's support in Pennsylvania was 2.7
percent. Show all of your work for the following
questions.
(i) The confidence interval for the true proportion of all
voters who support Biden in Pennsylvania is...
(ii) Suppose the confidence level was 95% in the article, how
many people did the poll survey in Pennsylvania?