O Menu Zy Section 7.2 - MAT 240: App X + Q X C 88 learn.zybooks.com/zybook/MAT-240-J4455-OL-TRAD-UG.22EW4/chapter/7/section/2 > > =zyBooks My library > MAT 240: Applied Statistics home > 7.2: Confidence intervals for population proportions zyBooks catalog ? Help/FAQ 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 2* = 1.960 0.99 z* = 2.576 387962.2528628.qx3zqy7 Jump to level 1 A poll reported 33% support for a statewide election with a margin of error of - NK - K 1.47 percentage points. How many voters should be sampled for a 90% confidence interval? Round up to the nearest whole number. Ex: 1234 | voters 2 3 Check Next Foodhack? 5:42 PM 4/16/2022