"an investigator predicts that dog owners in the country spend more time walking there dogs then do dog owners in teh city. The investigator gets a random sample of 21 country owners adn 23 city owners. The mean number of hours per week that the 21 country owners spend walking there dogs is 14.0 with a standard deviation of 4.0. The mean number of hours per week that teh 23 city owners spend walking there dogs is 10.0 with a standaard deviation of 3.0 (Boxplots of hours for both teh country and the city show no outliers or significant skew). Do dog owners in the country spend more time walking their dogs than city dog owners?"