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Ryan
Ryan, Engineer
Category: Math Homework
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Experience:  B.S. in Civil Engineering
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X=120, n=1100, 99% confidence, What is the upper bound of

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x=120, n=1100, 99% confidence
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Submitted: 8 months ago.
Category: Math Homework
Expert:  Ryan replied 8 months ago.

Hi,

Thank you for using the site.

Assuming that you need the confidence interval for the proportion, the upper bound value is:

(120 / 1100) + (2.576)√[(120/1100)(980/1100)/1100] = 0.1333

Please feel free to ask if you have any questions about this solution.

Thanks,

Ryan