SOLUTION: A school class went on a field trip to see a magician perform. There were 17 females and 20 males in the class. The magician randomly selected a volunteer from the audience, which

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Question 1195974: A school class went on a field trip to see a magician perform. There were 17 females and 20 males in the class. The magician randomly selected a volunteer from the audience, which had 52 females and 68 males. Given that the randomly selected audience member is a student from the class, which equation can be used to find the probability, P, that the person is also a female?

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Answer by ikleyn(52804) About Me  (Show Source):
You can put this solution on YOUR website!
.

        P = 17%2F%2817%2B20%29 = 17%2F37.         ANSWER


Explanation.   You reduce the space of events to  17+20 = 37  persons,
                      since it is  GIVEN  that the selected audience member is a person from the class.


Solved.