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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.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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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