Head Injuries Not Injured Wore Helmet 96 656 752. No Helmet 480 2330 2810 574 2986 35202 Use the data to answer the following. Remember to round all probabilities to three decimal places. [20] a. If one subject is randomly selected, the probability of selecting someone a. 346 who wore a helmet or was injured 752 + 5176 - 96 1232 2. 346 3562 3562 23542 3502 b. If one subject is randomly selected, the probability of selecting someone b . who did not wear a helmet and was not injured 2816) 2986 8390 60 P ( NH ) . P ( NI ) 3 5602 35602 12687844 C. If one subject is randomly selected, the probability of selecting someone -.167 who wore a helmet with a head injury 576 d. If one subject is randomly selected, the probability of selecting someone d. . 184 who was not injured, given that the subject wore a helmet 656 184