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Suppose that a certain college class contains 42students. Of these, 19 are sophomores, 25 are history majors, and 8are neither. A student is selected at
Suppose that a certain college class contains 42students. Of these, 19 are sophomores, 25 are history majors, and 8are neither. A student is selected at random from the class.
(a) What is the probability that the student is both a sophomore and a history major?(b) Given that the student selected is a history major, what is the probability that she is also a sophomore?
Write your responses as fractions.
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