At a track meet with 190 participants, 20 participate in jumping events, 1/4 of these jumpers are female, and 1/2 of the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female?

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  1. 20 jump
    1/4 of those = 5 are female jumpers
    1/2 of 190 = 95 are female
    So, p(jumper|female) = 5/95

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