Question: A poll reported 52% support for a statewide election with a margin of error of 1.67 percentage points. How many voters should be sampled for

A poll reported 52% support for a statewide election with a margin of error of 1.67 percentage points. How many voters should be sampled for a 95% confidence interval? Round up to the nearest whole number.

Confidence level Critical value

0.90

z=1.645

0.95

z=1.960

0.99

z=2.576

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