The Traffic police suspect that the number of people killed in a given road accident might be related to whether the driver was under the influence of alcohol. Using 500 most recent accidents they have this data. a) Calculate the probability that either 1 person was killed only or the driver was not under the influence of alcohol b)What is the relative risk of killing two person in a road accident given that the driver is under the influence of alcohol c) what is the relative risk of killing 1 person in road accident given that the driver is under the influence of alcohol d) Given that the driver was under the influence of alcohol, the probability that only 3 people were killed in a given road accident is

Number of people killed. Total Under Jes 60 110 30 200 the influence No 40 215 45 300 alcohol Total 100 325 500