1. You are interested in knowing whether training on implicit bias will decrease the number of use of force incidents that police departments experience. You take a sample of police departments and track their number of use of force incidents during the 30 days before the training and the 30 days after the training. Below are the results:Before Training After Training 1 2 21 15 11 9 16 15 76 55 24 20 91 100 21 20