Losing weight A Gallup Poll in November 2008 found that $59 %$ of the people in its sample said "Yes" when asked, "Would you like to lose weight? Gallup announced: Tor results based on the total sample of national adults, one can say with $95 %$ confidence that the margin of (sampling) error is ±3 percentage points."
(a) Explain what the margin of error means in this setting.
(b) State and interpret the $95 %$ confidence interval.
(c) Interpret the confidence level.