Problem Solving

Question

A national Survey of 1509 respondents reached on land lines and cell phones found that the percentage of adults who favor legalized abortion has dropped from 51%a year ago to 45%. The study claimed that the error attributable to sampling is +3 percentage points. would you claim that a majority of people are not in favor of legalized abortion?

The confidence interval for study is ________%to _______%

Answer 1

The confidence interval = 45% +/- the margin of error or 42% to 48%, so we can claim the majority are not in favor at the confidence level used to compute the margin of error (3%).