3/ (a) In a certain college, 25% of the students failed mathematics, 15% of the students failed chemistry, and 10% of the students failed both mathematics and chemistry. A student is selected at random. (i) If he failed chemistry, what is the probability that he failed mathematics? (ii) What is the probability that he failed mathematics or chemistry?
3/ (a) In a certain college, 25% of the students failed mathematics, 15% of the students failed chemistry, and 10% of the students failed both mathematics and chemistry. A student is selected at random. (i) If he failed chemistry, what is the probability that he failed mathematics? (ii) What is the probability that he failed mathematics or chemistry?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:3/ (a) In a certain college, 25% of the students failed mathematics, 15% of the
students failed chemistry, and 10% of the students failed both mathematics and
chemistry. A student is selected at random.
(i) If he failed chemistry, what is the probability that he failed mathematics?
(ii) What is the probability that he failed mathematics or chemistry?
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