In 2019, some researchers with the Pew Research Center interviewed a random sample of US adults about their social media usage. One of the questions was whether the person used the Facebook social media site. The sample proportion who use Facebook, based on 1502 respondents, was p̂ = 0.69.

(a) Describe how you could construct a bootstrap distribution to estimate the standard error of the proportion in this situation. 

(b) One such distribution, based on proportions from 5000 bootstrap samples, is normally distributed with a standard error of 0.012. Use this information to find a 99% confidence interval for the proportion of US adults (in 2019) who use the Facebook social media site.