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Higher June 2022 Unit 1 Q4

WJECHigherCurrent spec6 marksTree Diagrams

4. 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 (0.6) and A does not occur (blank); then B occurs and B does not occur after each, all blank
(b) Calculate the probability of neither event A nor event B occurring. [2]
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