Critical values for quick reference during this activity. Confidence level Critical value 0.90 2* = 1.645 0.95 = 1.960 0.99 y* = 2.576 270604.2209556.qx3zqy7 Jump to level 1 1 In a poll of 1000 randomly selected voters in a local election, 607 voters were 2 against fire department bond measures. 3 What is the sample proportion p? Ex: 0. 1234 4 What is the margin of error m for the 99% confidence level? Ex: 0.123 2 3 4 Check Next