A Local Planning Commission Is Interested in Finding Out What

Multiple Choice

A local planning commission is interested in finding out what proportion of its city's residents is opposed to constructing a new baseball stadium in the downtown area. A random sample of 1870 residents is obtained, and 41.2 percent of them are opposed to the stadium.
In this sample, the margin of error is

A) 770.
B) 2.3 percent.
C) 41.2 percent.
D) 0.023 percent.