Math 240

240: Applied Statistics home > ntervals for population proportions zyBooks catala CHALLENGE ACTIVITY 7.2.1: Confidence intervals for population proportions. Critical values for quick reference during this activity. Confidence level |Critical value 0.90 z* = 1.645 0.95 2*= 1.960 0.99 2 - 2.576 Jump to level 1 LJ In a poll of 1000 randomly selected voters in a local election, 366 voters were 2 in favor of school bond measures. 3 What is the 90% confidence interval? [ Ex: 0.123 EX: 0.123 [smaller value, larger value]