Graph 1 for use with Questions 2 through 11 only: For this study, glass workers were shown a computerized training video on the importance of wearing protective gear (referred to as PPE on graph). Data were collected on the correct wearing of PPE before and after training. Graph 1.jpg Flag question: Question 2 Question 20.4 pts Identify the IV and DV. Group of answer choices IV: showing of a computerized training video; DV: percent of PPE worn accurately IV: Percent of PPE worn accurately; DV: showing of a computerized training video IV: Percent of PPE worn accurately; DV: Percent of PPE worn accurately IV: showing of a computerized training; DV: showing of a computerized training