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 Jump to level 1 In a poll
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 |
Jump to level 1
In a poll of 1000 randomly selected voters in a local election, 869 voters were against fire department bond measures.
What is the sample proportion p^?
What is the margin of error m for the 90% confidence level?
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Precalculus, Enhanced WebAssign Edition
Authors: James Stewart
6th Edition
1285499948, 9781285499949
