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 427020.2697174.qx3zqy7 Start In a poll of 1000 randomly selected voters in a local election, 442 voters were N against school bond measures. 3 What is the sample proportion p? Ex: 0.123 0 4 What is the margin of error m for the 99% confidence level? Ex: 0.123 0 1 2 3 4 Check Next Feedback