Answer :

Answer:

For mutually exclusive events,  P(A or B)    = 0.7

Step-by-step explanation:

P(A) = 0.4

P(B) = 0.3

Here, A and B are mutually exclusive events.

A  ∩  B = Ф

    P(A  ∩  B) = 0

 

So, P(A or B)  = P(A) + P(B) - P(A ∩B)

=  0.4 + 0.3  - 0

= 0.7

P(A or B)  = 0.7

Hence, for mutually exclusive events,  P(A or B)    = 0.7

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