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-   -   Probability with "and" / "or" statements (https://www.askmehelpdesk.com/showthread.php?t=132397)

  • Sep 22, 2007, 08:47 AM
    rindariggins
    probability with "and" / "or" statements
    P(A) = 0.2, P(A or B) = 0.5, and P (A and B) = 0.1, find P(B)?


    a) 0.7

    b) 0.8

    c) 0.6

    d) 0.4
  • Sep 22, 2007, 09:06 AM
    galactus
    You're given all the info, just solve for P(B).

    P(A or B)=P(A)+P(B)-P(A and B)

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