In 2006 approximately 47 of Americans when surveyed by a Gal

In 2006, approximately 47% of Americans, when surveyed by a Gallup poll, felt that having a gun in the home made them safer than having no gun. The margin of error reported was 3%. Construct an interval estimate using these figures.

Solution

CI = 0.47 +/- 0.03 = (0.44 , 0.50)