Question: Facebook again Suppose that the information in Exercise 17 had been presented in the following way. Facebook reports that 70% of its users are from

Facebook again Suppose that the information in Exercise 17 had been presented in the following way. Facebook reports that 70% of its users are from outside the United States. Of the U.S.

users, two-thirds log on every day. Of the non-U.S. users, threesevenths log on every day. Draw a tree for this situation. Why is the tree better than the table in this case? Where are the joint probabilities found?

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