Students in a psychology class are identified as either introverts or extroverts using a personality quiz. They are then asked how many close friends they have. The results are summarized in the table. Data fewer than 5 close friends 5 or more close friends introvert 15 3 extrovert 11 21 1. What is the probability that one of the students selected at random is an introvert with fewer than 5 close friends? 2. What is the probability that one of the students selected at random is an extrovert? 3. What is the probability that one of the students selected at random has fewer than 5 close friends?

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