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 A poll for a statewide election has a margin of error

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

A poll for a statewide election has a margin of error of 1.74 percentage points.

How many voters should be sampled for a 99% confidence interval? Round up to the nearest whole number.

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