Have you ever noticed when watching a National Football Leag

Have you ever noticed, when watching a National Football League (NFL) game, that the players spend a lot of time standing around between plays? The following data were collected from a random sample of 12 NFL games.

Minutes standing around between plays

69.55

58.51

55.27

70.41

68.87

59.8

59.7

61.09

59.78

73.93

65.85

58.93
1) Does the data indicate the average time NFL players spend standing around between plays during a game is different from 56.87 minutes at =0.01?                                                                            

2) Construct a 95% confidence interval for the population average time NFL players spend standing around between plays during a game.

3) What would the P-value be if this were a lower tail hypothesis test? (Mathematically manipulate the P-value from part A to get your answer.)  

Solution