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In percentage points to one decimal place, what is the margin of sampling error for a survey of 1,600 randomly-selected respondents? +/- 25 points +/-

In percentage points to one decimal place, what is the margin of sampling error for a survey of 1,600 randomly-selected respondents?

+/- 25 points

+/- 4 points

+/- 10 points

+/- 2.5 points

+/- 0.0625 points

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