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This is not multiple choice and I got it wrong.
This is not multiple choice and I got it wrong. Please show step by step so I can know how to solve, Business Analysis 2372
User behavior on social media sites can be used to infer where a user is likely to be located. In some cases, the location can be narrowed down to a particular city block, while at the opposite extreme, only the user's country can be ascertained. One particular social media site has found that 70% of its users log in from outside the United States (US). Further, it knows that half of its total user base logs in at least once every day, and that 20% of its United States users log in at least once per day.
Suppose the company knows that a user logs in at least once per day. What is the probability that this user would be from inside the United States? Enter your answer to three decimal places.
Hint 1: Draw a probability tree. Let A = {user is from the US}, and B = {user logs in at least once per day}. You are looking for P(A|B).
Hint 2: P(B|A) + P(B|Ac) = 0.50.
