Higher
Draw a tree diagram for independent events
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Lesson details
Key learning points
- In this lesson, we will learn how to draw tree diagrams and complete missing probabilities in tree diagrams for independent events.
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3 Questions
Q1.
Here is some information regarding a sign language course taken by some students in year 10 and year 11. A student is randomly selected. What is the probability that they are in year 11?
A
B
Q2.
Here is some information regarding a sign language course taken by some students in year 10 and year 11. A student is randomly selected. What is the probability that they passed the course?
B
C
Q3.
Here is some information regarding a sign language course taken by some students in year 10 and year 11. A student is randomly selected. What probability scenario is represented by the fraction 50 out of 150?
A year 11 student who passes the test
The total number of students who failed the test
3 Questions
Q1.
Here is the first branch of a probability tree diagram.
B
C
D
Q2.
Here is the first branch of a different probability tree diagram. What should the missing probability be?
0.41
0.82
18
Q3.
This tree diagram shows Amir taking red and blue counters from a jar. He replaces the counter after he has picked one up.
A
B
D