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Help with probability question

  1. Aug 26, 2011 #1
    The two events A and B have probabilities 0.2 and 0.4. Also P(A intersect B) = 0.08.

    (a) Are the two events A and B independent? Explain.
    well since 0.2*0.4=0.8 they are independent

    (b) Find the probability that either A or B or both occur.
    0.2+0.4+0.08=0.68
    (c) Find the probability that neither A nor B occurs.
    1-.68=0.32
    (d) Find the probability that exactly one of A or B occurs.
    0.2+0.4-.08=0.52

    not sure could someone give feedbacks cheers
     
  2. jcsd
  3. Aug 26, 2011 #2
     
    Last edited: Aug 26, 2011
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