Question
Confidence level Critical value 0.90 z=1.645 0.95 z=1.960 0.99 z=2.576 377004.2300268.qx3zqy7 Jump to level 1 A poll reported 47% support for a statewide election with
| Confidence level | Critical value |
|---|---|
0.90 | z=1.645 |
0.95 | z=1.960 |
0.99 | z=2.576 |
377004.2300268.qx3zqy7
Jump to level 1
A poll reported 47% support for a statewide election with a margin of error of 2.4 percentage points. How many voters should be sampled for a 95% confidence interval? Round up to the nearest whole number.
voters:
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Prealgebra And Algebra
Authors: Margaret L Lial, Diana L Hestwood, John E Hornsby, Terry McGinnis
4th Edition
0321854837, 9780321854834
