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A study of 500 of Freshman found that 35% put on the Freshman-15 (pounds). What is...

A study of 500 of Freshman found that 35% put on the Freshman-15 (pounds). What is the margin of error for 95% Confidence, rounded to the nearest 10th of a percent?

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Answer #1

At 95% confidence level, the critical value is z0.025 = 1.96

The margin of error is

  

= 4.2%

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