The Pew Internet and American Life Project asked a random sample of 2253 US adults, "Do you ever... use TW or another service to share updates about yourself or see updates about others?" In the sample, 19% said "Yes". The dot plot shows the proportion who would say "Yes" to this question in each of 100 random samples of size 2253 from the population where 19% would say "Yes."
a. Use the results of the stimulation to approximate the margin of error for estimate of the proportion of the US adults who would say "Yes" to this question.
b. Interpret the margin error.​