A farmer plants three varieties of tomato seeds: Variety A, Variety B, and Variety C. Variety A makes up 35% of the crop, Variety B makes up 45%, and Variety C makes up 20%.
The probability that a seed fails to germinate is:
Draw a tree diagram to show this information.
A seed is selected at random. Find the probability it fails to germinate.
Given that a seed failed to germinate, find the probability it was Variety B.
Practise Edexcel A Level Maths Conditional Probability with exam-style questions for A Level Maths. 100 questions covering Set Notation, Conditional Probability, Conditional Probabilities in Venn Diagrams, Probability Formulae, and Tree Diagrams, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.