Mathematics for IGCSE & O level - Probability (Section 8 - No. 7)
If the probability that Sarah's bus is late on any given day is 0.2, what is the probability that her bus is late on just one of the two days?
0.04
0.16
0.32
0.36
Maelezo
Using a tree diagram: (0.2 * 0.8) + (0.8 * 0.2) = 0.32