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    IBMediumProbability10–12

    Conditional Probability

    Probabilidade Condicional

    In a school, 60\% of students study French. Of those who study French, 30\% also study Spanish. What percentage of all students study both French and Spanish?

    P(F \cap S) = P(S|F) \times P(F)

    Solution

    Step 1 of 3

    1. 1.P(F) = 0.60, P(S|F) = 0.30