A doctor believes that the fruit and vegetable intake of Northern adolescents is different from the fruit and vegetable intake of Southern adolescents. To study this, she gathers data on the number of fruits and vegetables eaten per week from a random sample of Northern adolescents and a random sample of Southern adolescents. Which is an appropriate null hypothesis for the study? The average number of fruits and vegetables eaten per week among Northern adolescents is less than the average number of fruits and vegetables eaten per week among Southern adolescents. The average number of fruits and vegetables eaten per week among Northern adolescents is the same as the average number of fruits and vegetables eaten per week among Southern adolescents. The average number of fruits and vegetables eaten per week among Northern adolescents is greater than the average number of fruits and vegetables eaten per week among Southern adolescents. The average number of fruits and vegetables eaten per week among Northern adolescents is different from the average number of fruits and vegetables eaten per week among Southern adolescents.