Concept explainers
In Exercises 1–22, use Bayes’ theorem to calculate the probabilities.
Manufacturing Reliability Ten percent of the pens made by Apex are defective. Only 5% of the pens made by its competitor, B-ink, are defective. Since Apex pens are cheaper than B-ink pens, an office orders 70% of its stock from Apex and 30% from B-ink. A pen is chosen at random and found to be defective. What is the probability that it was produced by Apex?
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Finite Mathematics & Its Applications (12th Edition)
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