Question 7.86

image 56. A Gallup poll conducted May 2–7, 2013, by telephone interviews (both landlines and cellular phones) of 1535 American adults found that 59% of Americans regarded gay and lesbian relations as morally acceptable.

  1. How many of the 1535 people interviewed said gay and lesbian relations were morally acceptable?
  2. Gallup indicates that the margin of error for this poll is ±3 percentage points. Explain to someone who knows nothing about statistics what “margin of error ±3 percentage points” means.
  3. Give a 95% confidence interval for this survey. Does your margin of error agree with the 3 percentage points announced by Gallup?