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The General Addition Rule | Probability | the virtual school

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The General Addition Rule | Probability | the virtual school


The General Addition Rule. This morning I
had a choice, I could either go to a cafe to eat breakfast or I could stay at home to
eat. I decided to go to a cafe. Because I went to the cafe I didn’t eat at home. The
two events are mutually exclusive, meaning that they couldn’t happen at the same time.
So, if I have a choice between two events, Event A or Event B, the probability of either
Event A or Event B happening is equal to the two separate probabilities added together. We can summarise this as P(A or B)=P(A)
+ P(B)

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5 thoughts on “The General Addition Rule | Probability | the virtual school”

  1. John Uebersax says:

    Nice, but title does not match content:
    General Addition Rule: P(A or B) = P(A) + P(B) – P(A and B)
    Addition Rule for Mutually Exclusive Events:  P(A or B) = P(A) + P(B)

  2. Faizan Iqbal says:

    Awesome thank you very much

  3. Alb Vas says:

    What John U. sad below. This title and the formula do not match.

  4. Elvichu says:

    Ayy Wepener Gang. Squad up

  5. Arnav Vaid says:

    you sound like alfred from batman lol

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