Question
Confidence level Critical value 0.90 z=1.645 0.95 z=1.960 0.99 z=2.576 A poll reported 61% support for a statewide election with a margin of error of
| Confidence level | Critical value |
|---|---|
0.90 | z=1.645 |
0.95 | z=1.960 |
0.99 | z=2.576 |
A poll reported 61% support for a statewide election with a margin of error of 3.67 percentage points. How many voters should be sampled for a 99% confidence interval? Round up to the nearest whole number.
voters
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Elementary Number Theory
Authors: Gove Effinger, Gary L Mullen
1st Edition
1000427129, 9781000427127
