A safety agency analysed road traffic accidents involving injury to pedestrians by private cars and produced the following table:
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What is the probability that:
(a) an injury to a pedestrian proves fatal?
(b) an accident involved a sports car?
(c) an accident involved a 4 * 4 car or resulted in a nonserious injury?
(d) an accident resulted in serious injury and involved an ‘other' type of car?
(e) an accident that involved a 4 * 4 car resulted in a fatal injury? Compare this figure and your answer to (a), and comment on whether the type of car and degree of injury are independent.