27) The real estate industry claims that it is the best and most effective system to market residential real estate. A survey of randomly selected home sellers in Illinois found that a 95% confidence interval for the proportion of homes that are sold by a real estate agent is 69% to 81%. Interpret the interval in this context a) 95% of all random samples of home sellers in Illinois will show that between 69% and 81% of homes are sold by a real estate agent. b) In 95% of the years, between 69% and 81% of homes in Illinois are sold by a real estate agent. c) We are 95% confident that between 69% and 81% of homes in this survey are sold by a real estate agent. d) We are 95% confident, based on this sample, that between 69% and 81% of all homes in Illinois are sold by a real estate agent. e) 95% of all homes in Illinois are sold by a real estate agent