Question
Critical values for quick reference during this activity. Confidence level Critical value 0.90 =1.645 0.95 =1.960 0.99 =2.576 Jump to level 1 A poll reported
Critical values for quick reference during this activity.
| Confidence level | Critical value |
|---|---|
0.90 | =1.645 |
0.95 | =1.960 |
0.99 | =2.576 |
Jump to level 1
A poll reported 31% support for a statewide election with a margin of error of 4.98 percentage points. How many voters should be sampled for a 90% confidence interval? Round up to the nearest whole number.
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Discrete Mathematics and Its Applications
Authors: Kenneth H. Rosen
7th edition
0073383090, 978-0073383095
