Question

1. Police plan to enforce speed limits by using radar traps at 4 different locations within the city limits. The radar traps at each of the locations L₁, L₂, L₃, and L₄are operated 40%, 30%, 20%, and 30% of the time, and if a person who is speeding on his way to work has probabilities of 0.2, 0.1, 0.5, and 0.2, respectively, of passing through these locations, TREE DIAGRAM?

Answer 1