Roy Rogers, the lead broker at C-U Broke (a local estate brokerage firm) is interested in identifying whether there is a difference in the number of

Roy Rogers, the lead broker at C-U Broke (a local estate brokerage firm) is interested in identifying whether there is a difference in the number of days that a house stays on the market in Champaign (population 1) versus Urbana (population 2). Roy has collected a random sample of 60 houses in each city and calculated the average number of days on the market to be 39.4 and 36.1 days, respectively. From previous studies, he is able to assume the population standard deviations are 5 and 4.3, respectively.