Critical values for quick reference during this activity. Confidence level Critical value 0.90 2* = 1.645 0.95 2* = 1.960 0.99 2 = 2.576 270604 2228390.pxazay? Jump to level 1 A poll reported 30% support for a statewide election with a margin of error of 3.32 percentage points How many voters should be sampled for a 95% confidence interval? Round up to the nearest whole number. Ex: 1234 + voters