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 359802.2295328.qx3zay7 V Jump to level 1 1 V A poll for a statewide election has a margin of error of 1.92 percentage points. 2 V How many voters should be sampled for a 99% confidence interval? Round up 3 to the nearest whole number. 4 Ex: 1234 $ voters 2 3 4 Check Next