Survey of Math

A math class contains 7 females (three of whom speak French and the rest speak only English),and 12 males (two of whom speak French and the rest speak only English).

a) A student in the class is chosen at random. If you're told the student is female, what is the probability that the student can speak French?


b) The first student is "placed" back into the class, and another student is chosen at random. If you're told the student can speak French, what is the probability the student is female?

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  1. a) If the person is female, then there would be a 3 in 7 chance they can speak french.

    b) If the person can speak french, then there would be a 3 in 5 chance they are female.

    Hope this helps.

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    posted by Rob

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