STAT-319-Quiz2-063-solutions

STAT-319-Quiz2-063-solutions - Name: Serial: Question1....

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SOLUTIONS King Fahd University of Petroleum & Minerals Department of Mathematics & Statistics STAT-319-Term063-Quiz2 Name: ID: Serial: Question1. (3-points) Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The results from 100 disks are summarized as follows: Shock Resistance Scratch Resistance High Law Total High 70 9 79 Law 16 5 21 Total 86 14 100 Let A denote the event that a disk has high shock resistance, and let B denote the event that a disk has high scratch resistance. Determine the following probabilities: a. () PA 86 0.86 100 ⇒= = (1-Point) b. PBA 70 70 100 0.8140 86 86 100 PA B = = = (2-Points) Question2.(7-Points) Customers are used to evaluate preliminary product designs. In the past, 95% of highly successful products received good reviews, 60% of moderately successful products received good reviews, and 10% of poor products received good reviews. In addition, 40% of products have been highly
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This note was uploaded on 03/02/2011 for the course STAT 319 taught by Professor Koko during the Spring '11 term at Mass Colleges.

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