Critical values for quick reference during this activity. Confidence level Critical value 0.90 z=1.645 0.95 z=1.960 0.99
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Question:
Critical values for quick reference during this activity.
Confidence level | Critical value |
---|---|
0.90 | z=1.645 |
0.95 | z=1.960 |
0.99 | z=2.576 |
In a poll of 1000 randomly selected voters in a local election, 345 voters were against school bond measures.
What is the sample proportion p^?
What is the margin of error m for the 90% confidence level?
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