Critical values for quick reference during this activity. Confidence level | Critical value 0.90 2* = 1.645 0.95 = 1.960 0.99 z* = 2.576 402878.650592.qx3zqy7 Start In a poll of 1000 randomly selected voters in a local election, 434 voters were 2 against fire department bond measures. 3 What is the sample proportion p? Ex: 0.123@ 4 What is the margin of error m for the 90% confidence level? Ex: 0.123@ 1 2 3 4 Check Next