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

40, 30, 39, 40, 41, 39, 31, 28, 33

a. Research have found that in the population of nonfootball players, u = 30 (ox=5). Using both tails of the sampling distribution of the means, determine if your football players represent a different population.

b. What do you conclude about the population of football players and it's u?