libbyfisher11111 libbyfisher11111

01-02-2021
Mathematics

contestada

A and B are two mutually exclusive events.
P(A) = 0.3 and P(A or B) = 0.7
Work out the value of P(B).

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reguser315 reguser315

01-02-2021

If the events are mutually exclusive, then P(B)=P(A or B)-P(A). This is 0.7-0.3, which is 0.4.

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