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CHALLENGE ACTIVITY 7.2.1: Confidence intervals for population proportions. Critical values for quick reference during this activity. Confidence level | Critical value 0.90 * = 1.645

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CHALLENGE ACTIVITY 7.2.1: Confidence intervals for population proportions. Critical values for quick reference during this activity. Confidence level | Critical value 0.90 * = 1.645 0.95 * = 1.960 0.99 = 2.576 359850.2310748.qx3zqy7 Start In a poll of 1000 randomly selected voters in a local election, 783 voters were against school bond measures. What is the sample proportion p? Ex: 0.123 What is the margin of error m for the 95% confidence level? Ex: 0.123

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