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4 years ago

If p(a) = 0.62, p(b) = 0.47, and p(a or b.= 0.88, then p(a and b.= _____

1 answer:

6 0

Use the identity:
P(A or B)=P(A)+P(B)-P(A and B)
Substitute given values,
0.88=0.62+0.47-P(A and B)
=>
P(A and B)=0.62+0.47-0.88=0.21

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