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1 August, 11:38

P (A) = 0.50, P (B) = 0.40, and P (A and B) = 0.15 what is P (A or B) ?

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  1. 1 August, 11:51
    0
    0.75

    Step-by-step explanation:

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

    0.5 + 0.4 - 0.15 = 0.75

    (I also just took this question on APEX)
  2. 1 August, 11:53
    0
    P (A or B) = 0.90.

    This is a problem of probability called separate event P (A or B), those events that given the occurrence of one prevents the occurrence of the other

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

    Give P (A) = 0.50 and P (B) = 0.40. Calculate P (A or B):

    P (A or B) = 0.50 + 0.40

    P (A or B) = 0.90
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