CHALLENGE ACTIVITY 7.2.1: Confidence intervals for population proportions. 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 402294.2602416.qx3zqy7 Jump to level 1 In a poll of 1000 randomly selected voters in a local election, 354 voters were in favor of school bond measures. What is the 90% confidence interval? [ Ex: 0.123 # Ex: 0.123 [smaller value, larger value]