Find probabilities from frequency trees

Maths

Probability 2 (Sample space, Venn diagrams and experimental)

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?

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?

The total number of students who failed the test

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?

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.

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.

This Venn diagram shows the number of students who study art, history and geography. Calculate P (Art ∩ Geography)

This Venn diagram shows the number of students who study art, history and geography. Calculate P(not history).

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