Question: Select the best answer for the question. 18. Assume that an event A contains 10 observations and event B contains 15 observations. If the intersection

Select the best answer for the question. 18. Assume that an

Select the best answer for the question. 18. Assume that an event A contains 10 observations and event B contains 15 observations. If the intersection of events A and B contains exactly 3 observations, how many observations are in the union of these two events? O A. 10 O B. 22 O C. 18 O D. O

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