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A bag contains 6 red balls and 9 white balls. Two balls are drawn without replacement....

A bag contains 6 red balls and 9 white balls. Two balls are drawn without replacement. (Enter your probabilities as fractions.)

(a) What is the probability that the second ball is white, given that the first ball is red?


(b) What is the probability that the second ball is red, given that the first ball is white?


(c) Answer part (a) if the first ball is replaced before the second is drawn.

A survey questioned 1000 people regarding raising the legal drinking age from 18 to 21. Of the 530 who favored raising the age, 380 were female. Of the 470 who expressed opposition, 190 were female. (Enter your probabilities as fractions.)

(a) What is the probability that a person selected at random is a female?


(b) What is the probability that a person selected at random favors raising the age if the person is a woman?

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