4. The probability that the first bus is late is . If the first bus is late, the probability of the second bus being late is otherwise it is (buses are either 13 on time or late, they are never early!). a) Complete the tree diagram. b) What is the probability of both buses being late? c) What is the probability of both buses being on time? d) What is the probability of at least one bus being on time? Late Late On Time Late On Time On Time First Bus Second Bus

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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4. The probability that the first bus is late is . If
the first bus is late, the probability of the second bus
being late is otherwise it is (buses are either
13
on time or late, they are never early!).
a) Complete the tree diagram.
b) What is the probability of both buses being late?
c) What is the probability of both buses being on
time?
d) What is the probability of at least one bus being on
time?
Late
Late
On Time
Late
On Time
On Time
First Bus
Second Bus
Transcribed Image Text:4. The probability that the first bus is late is . If the first bus is late, the probability of the second bus being late is otherwise it is (buses are either 13 on time or late, they are never early!). a) Complete the tree diagram. b) What is the probability of both buses being late? c) What is the probability of both buses being on time? d) What is the probability of at least one bus being on time? Late Late On Time Late On Time On Time First Bus Second Bus
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