In a boutique wildlife sanctuary with 200 animals, each animal is classified as a Mammal, Bird, or Reptile. The following table shows the number of animals in each category and whether they are Vaccinated (VVV) or Not Vaccinated (V′V'V′).
The events MMM, BBB, and R R\,R represent a randomly selected animal being a Mammal, Bird, or Reptile respectively. Let V V\,V be the event that an animal is vaccinated.
An animal is selected at random. Find:
P(B)P(B)P(B)
P((M∩V)′)P((M \cap V)')P((M∩V)′)
P(V∣R)P(V | R)P(V∣R)
Let T T\,T be the event that an animal is fitted with an electronic tracking tag. Given that 25% of Mammals, 40% of Birds, and 10% of Reptiles are fitted with a tag,
describe the structure of a Venn diagram to represent the events M,B,R M, B, R\,M,B,R and TTT.
find the probability that a randomly selected animal is fitted with an electronic tracking tag.
368 exam-style questions on Edexcel A Level Maths Conditional Probability, covering 2.1 Set Notation, 2.2 Conditional Probability, 2.3 Conditional Probabilities in Venn Diagrams, 2.4 Probability Formulae, and 2.5 Tree Diagrams. Each one has a worked solution and a mark scheme showing where the marks go.