Suppose that a certain college class contains students. Of these, are...
...sophomores, are social science majors Suppose that a certain college class contains students. Of these, are sophomores, are social science majors, and are neither. A student is selected at random from the class.
(a) What is the probability that the student is both a sophomore and a social science major?
(b) Given that the student selected is a sophomore, what is the probability that she is also a social science major?
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