Are the events fatal crash and van independent Independent D

Are the events fatal crash and van independent?

Independent

Dependent

(g) Suppose two crashes are selected at random. What is the probability (±0.0001) that both were fatal and involved an unknown type of vehicle?

P(Both fatal and unknown vehicle) = ×10^-7

Solution

Are the events fatal crash and van independent?

dependent because there is an intersection between the 2 events

Suppose two crashes are selected at random. What is the probability (±0.0001) that both were fatal and involved an unknown type of vehicle?

p = 6282 / 19863 =0.3163

Probability = 0.3163 * 0.3163 = 0.1000