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What is the margin of error for a yes/no survey of 200 people with a proportion of 65% who answered \"yes\"?. A. ±3.37%. B. ±5.06%. C. ±6.75%D. ±8.43%. E. ±10.12%. *please help*
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What is the margin of error for a yes/no survey of 200 people with a proportion of 65% who answered \"yes\"?. A. ±3.37%. B. ±5.06%. C. ±6.75%D. ±8.43%. E. ±10.12%. *please help*

User NerdyNick
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√((p*q)/n)

where p is the number of positive outcomes (yes) and q is the number of negative outcomes (no).


√((0.65*(1-0.65))/200) = 0.0337 or 3.37%

answer is A.
User ZJay
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