Question: 7. In a certain experiment, whenever the event A occurs, the event B also occurs. Which of the following statements is true and why? (a)

7. In a certain experiment, whenever the event A occurs, the event B also occurs. Which of the following statements is true and why?

(a) If we know that A has not occurred, we can be sure that B has not occurred as well.

(b) If we know that B has not occurred, we can be sure that A has not occurred as well.

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