A manager wants to determine if an employee training program has increased her employees' customer satisfaction ratings. She randomly selects ten of the participating employees and compares their mean customer satisfaction ratings before and after the training.

 

Employee# Before After 1 4.2 2 3.7 3 4 5 6 7 8 9 10 2.9 3.2 3.1 4.1 2.8 2.8 4.0 3.6 4.1 3.4 2.9 3.1 3.0 4.1 2.7 2.6 :: 4.1 3.6 Difference -0.1 -0.3 0 -0.1 -0.1 0 -0.1 -0.2 0.1 0 Describe in context what the positive difference for employee # 9 represents. O An "After minus Before" difference of 0.1 indicates a decrease in the employee's customer satisfaction rating. O An "After minus Before" difference of 0.1 indicates an increase in the employee's customer satisfaction rating. O A "Before minus After" difference of 0.1 indicates an increase in the employee's customer satisfaction rating O A "Before minus After" difference of 0.1 indicates no change in the employee's customer satisfaction rating.