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Describe and correct error
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5 votes
Describe and correct error

Describe and correct error-example-1
User Alex Barnes
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The answer is option b, it should be multiplied instead of add.
Remember, in case of independent event, P(A and B) = P(A) * P(B).
P(A or B) = P(A) + P(B) - P(A and B)
User Fran Hoey
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