In a study you obtain the following data representing the aggressive tendencies of some football players:

40 30 39 40 41 39 31 28 33

(a) Researchers have found that in the population of non-football players, µ is 30 (σx = 5.) Using both tails of the sampling distribution, determine whether your football players represent a different population.

(b) What do you conclude about the population of football players and its µ?