In an effort to increase production of an automobile part, the factory manager decides to play music in the manufacturing area. Eight workers are selected and the number of items each produced for a specific day is recorded. After one week of music, the same workers are monitored again. The data are given in the table. AT a= 0.05, can the manager conclude that the music has increased production? show work Worker 1 before 6 after 10 worker 2 before 8 after 12 worker 3 before 10 after 9 worker 4 before 9 after 12 worker 5 before 5 after 8 worker 6 before 9 after 8 worker 8 befor 7 after 10