Describe what the notation upper p left parenthesis upper b vertical line upper a right parenthesis represents. choose the corre
ct 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
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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