19. Out of 100 teams, the number of wins in a season for 32 randomly selected professional football teams are listed below.

a) Construct a 95% confidence interval for the true mean number of wins in a season for all 100 teams.

b) Explain why we don't expect most of the values below to be in the confidence interval by interpreting the confidence interval in a complete sentence.

9 9 9 8 10 9 7 2

11 10 6 4 11 9 8 8

12 10 7 5 12 6 4 3

12 9 9 7 10 7 7 5