In this lesson, we will learn how to use frequency trees to find probabilities including revision on how to draw frequency trees given some information.
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Some children were asked if they owned a cat or a dog. A child is chosen at random. Calculate the probability that a child who owns a cat is chosen.
A
Correct answer: B
B
C
Q2.
Some children were asked if they owned a cat or a dog. A child is chosen at random. Calculate the probability that a child who owns a dog or a cat is chosen.
A
B
Correct answer: C
C
Q3.
This Venn diagram shows the number of students who study art, history and geography. Calculate P (Art ∩ Geography)
A
B
Correct answer: C
C
Q4.
This Venn diagram shows the number of students who study art, history and geography. Calculate P(not history).
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
Correct answer: C
C
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?
Correct answer: A
A
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?
Correct answer: A year 10 students who fail the test
A year 10 students who fail the test
A year 11 student who passes the test
The total number of students who failed the test
Lesson appears in
UnitMaths / Probability 2 (Sample space, Venn diagrams and experimental)