A recent survey found that 80 percent of jeans have back pockets, 65 percent have front pockets, and 48 percent have both back and front pockets. Suppose a pair of jeans is selected at random and it is determined that it has front pockets. What is the probability that a randomly selected pair of jeans with front pockets also has back pockets?
Use conditional probability: among the 65% of jeans with front pockets, 48% have both front and back pockets. Thus the probability is 48 ÷ 65 ≈ 0.738, which rounds to 0.74. The correct choice is 0.74.
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