Answered

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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).

Sagot :

Reguser315idn
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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