Answer to Question #294745 in Statistics and Probability for Rio

Question

An investigator predicts that dog owners in the country spend more time

walking their dogs than do dog owners in the city. The investigator gets a sample

of 21 country owners and 23 city owners. The mean number of hours per week

that city owners spend walking their dogs is 10.0. The standard deviation of

hours spent walking the dog by city owners is 3.0. The mean number of hours’

country owners spent walking their dogs per week was 15.0. The standard

deviation of the number of hours spent walking the dog by owners in the country

was 4.0. Do dog owners in the country spend more time walking their dogs than

do dog owners in the city?