om factory 1 whose shipments contain 8% defective smartphones. Sixty- ve percent of the shipments come from factory 2 whose shipments contain 6% defective smartphones. The remainder of the shipments comes from facto

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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A smartphone company receives shipments of smartphones from three factories, labelled, 1, 2 and 3. Twenty- ve percent of shipments come from factory 1 whose shipments contain 8% defective smartphones. Sixty- ve percent of the shipments come from factory 2 whose shipments contain 6% defective smartphones. The remainder of the shipments comes from factory 3 whose shipments contain 4% smartphones. The company receives a shipment, but does not know the source. A random sample of 15 smartphones is inspected, and three of the smartphones are found to be defective. What is the probability that this shipment came from factory 2?

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