A mobile game is available on three platforms. 60% of downloads are from the App Store, 25% from the Play Store, and 15% from a Web Download.
The probability that a download from the App Store results in a bug report is 1%. The probability that a download from the Play Store results in a bug report is 2%. The probability that a download from a Web Download results in a bug report is 6%.
Draw a tree diagram to show this information.
A download is selected at random. Find the probability it results in a bug report.
Given that a download resulted in a bug report, find the probability it was from the Play Store.
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.