DISCRETE PROBABILITY (Chs14, 15,16)
Here is an excellent video which gives questions about Tree Diagrams. Pause the video and try to solve it before you watch the rest.
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Here is an excellent Binomial probability distribution problem. Solve the problem and then go to the links below for the videos which explain the solution.
LINKS FOR SOLUTION
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=706&solution=3.1
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=706&solution=3.2
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=706&solution=3.3
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=706&solution=3.1
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=706&solution=3.2
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=706&solution=3.3