The correct interpretation of this confidence interval is:

MATLAB: An Introduction with Applications
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Let’s say that 44 percent of the 1,300 U.S. adults who responded to a poll about marijuana legalization said they support legalization. Let’s also say the margin of error for the results is +/- 3 percentage points. The margin of error tells us there’s a high probability that nationwide support for marijuana legalization falls:

The correct interpretation of this confidence interval is:

 

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