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A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage provider. What is the sample size? The margin

A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage provider.

What is the sample size?

The margin of error for this data set is 2.5%. What is the 95% confidence interval using only 1 decimal?

(Example answer:32.6 to 42.9)

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