Safari File Edit View History Bookmarks Window Help Q Sat Apr 17 19:59 Students B Grades - FIN-250-T4198 Personal Financial Planning 2.. zy Section 7.2 - MAT 240: Applied Statistics Course Hero = zyBooks My library > MAT 240: Applied Statistics home > 7.2: Confidence intervals for population proportions zyBooks catalog Help/FAQ Brendyn Gosselin CHALLENGE ACTIVITY 7.2.1: Confidence intervals for population proportions. Critical values for quick reference during this activity. Confidence level Critical value 0.90 2* = 1.645 0.95 * = 1.960 0.99 2* = 2.576 Jump to level 1 A poll for a statewide election has a margin of error of 2.09 percentage points. - 1 .