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25 February, 20:12

Describe what the notation upper p left parenthesis upper b vertical line upper a right parenthesis represents. choose the correct answer below.

a. the probability of event a occurring, given that event b has already occurred.

b. the probability of event b occurring, given that event a has already occurred.

c. the probability of event b or event a occurring.

d. the probability of event b and event a occurring

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Answers (2)
  1. 25 February, 20:20
    0
    The correct answer is b), the probability of B occurring given A has occurred.
  2. 25 February, 20:56
    0
    Answer: The correct choice is B.

    When you have a vertical line in a probability statement, it is referring to the fact that the second event has already happened.

    Imagine, drawing marbles from a bag of blue and red marbles. You could write a probability statement in which you asked, "What is the probability of drawing a red marble given that you just drew a blue marble?"

    In this case, you would use a vertical line separating the two events.
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