Critical values for quick reference during this activity. Confidence level | Critical value 0.90 2* = 1.645 0.95 Z * = 1.960 0.99 2 * = 2.576 403440.2594180.qx3zqy7 Jump to level 1 A poll reported 42% support for a statewide election with a margin of error of 4.52 percentage points. How many voters should be sampled for a 95% confidence interval? Round up to the nearest whole number. Ex: 1234 + voters