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Intermediate June 2022 Unit 1 Q14

WJECIntermediateCurrent spec6 marksTree Diagrams

14. A and B are independent events.
The probability of event A occurring is 0·6.
The probability of event A and event B occurring is 0·48.

(a) Complete the tree diagram. [4]
Tree diagram: first branches A occurs (probability 0·6) and A does not occur (blank); from each, second branches B occurs and B does not occur, all with blank probabilities
(b) Calculate the probability of neither event A nor event B occurring. [2]
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