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Asked Apr 9, 2019
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Q4. You conduct a poll comparing two candidates. In a poll of 400 people, 190 prefer candidate A, and 210 prefer B.

Q4e. If you want to shrink one stdev error to 1%, how many people do you need to survey? 

 

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In this question we are taking the sample of 400, out of which 190 prefers A and 210 prefers B.

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