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A recent survey estimated that 19 percent of all people living in a certain region regularly use sunscreen when going outdoors. The margin of error for the estimate was 1 percentage point. Based on the estimate and the margin of error, which is an appropriate conclusion?

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Answer: The conclusion is that all samples of the same size between 18% to 20% indicate that people living in a certain region use sunscreen regularly when going outdoors.

Explanation: Given percentage from the recent survey, the possible range is calculated as below:

All possible range : (19% ± 1% ) = (18%, 20%)

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