In a survey of 1,200 social media users, 76% said it is okay to friend co-workers, but 56% said it is not okay to friend your boss. (Data extracted from "Facebook Etiquette at Work," USA Today, March 24, 2010, p. 1B.)
a. Construct a 95% confidence interval estimate for the population proportion of social media users who would say it is okay to friend co-workers.
b. Construct a 95% confidence interval estimate for the population proportion of social media users who would say it is not okay to friend their boss.
c. Write a short summary of the information derived from (a) and (b).