A November 2015 Poll of Size N = 1021 Had

Multiple Choice

A November 2015 poll of size n = 1021 had a sample proportion = 0.86 disapproving of Congress. If this is regarded as a simple random sample, then a 95 percent confidence interval for the proportion p of all adults who disapprove of Congress is closest to:

A) 0.86 ± 0.000231.
B) 0.86 ± 0.0105.
C) 0.86 ± 0.021.
D) 0.86 ± 0.03.