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Human visual inspection of solder joints on printed

Probability and Statistics for Engineers and the Scientists | 9th Edition | ISBN: 9780321629111 | Authors: Ronald E. Walpole; Raymond H. Myers; Sharon L. Myers; Keying E. Ye ISBN: 9780321629111 32

Solution for problem 19E Chapter 2

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Probability and Statistics for Engineers and the Scientists | 9th Edition | ISBN: 9780321629111 | Authors: Ronald E. Walpole; Raymond H. Myers; Sharon L. Myers; Keying E. Ye

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Problem 19E

Human visual inspection of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the numerous types of solder defects (e.g., pad nonwetting, knee visibility, voids) and even the degree to which a joint possesses one or more of these defects. Consequently, even highly trained inspectors can disagree on the disposition of a particular joint. In one batch of 10,000 joints, inspector A found 724 that were judged defective, inspector B found 751 such joints, and 1159 of the joints were judged defective by at least one of the inspectors. Suppose that one of the 10,000 joints is randomly selected. a?. ?What is the probability that the selected joint was judged to be defective by neither of the two inspectors? b?. ?What is the probability that the selected joint was judged to be defective by inspector B but not by inspector A?

Step-by-Step Solution:

Answer Step 1 of 4 A: the set of defective joints found by inspector A.=724 B: the set of defective joints found by inspector B.=751 AB:t he joints were judged defective by at least one of the inspectors=1159 Step 2 of 4 P(A)=724/10000=0.0724 P(B)=751/10000=0.0751 P(AB)=1159/10000=0.1159 P(AB)=P (A)+P(B)-P(AB) =0.0724+0.0751-0.1159 =0.0316

Step 3 of 4

Chapter 2, Problem 19E is Solved
Step 4 of 4

Textbook: Probability and Statistics for Engineers and the Scientists
Edition: 9
Author: Ronald E. Walpole; Raymond H. Myers; Sharon L. Myers; Keying E. Ye
ISBN: 9780321629111

This full solution covers the following key subjects: Joints, inspector, Joint, defective, judged. This expansive textbook survival guide covers 18 chapters, and 1582 solutions. This textbook survival guide was created for the textbook: Probability and Statistics for Engineers and the Scientists, edition: 9. The answer to “Human visual inspection of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the numerous types of solder defects (e.g., pad nonwetting, knee visibility, voids) and even the degree to which a joint possesses one or more of these defects. Consequently, even highly trained inspectors can disagree on the disposition of a particular joint. In one batch of 10,000 joints, inspector A found 724 that were judged defective, inspector B found 751 such joints, and 1159 of the joints were judged defective by at least one of the inspectors. Suppose that one of the 10,000 joints is randomly selected. a?. ?What is the probability that the selected joint was judged to be defective by neither of the two inspectors? b?. ?What is the probability that the selected joint was judged to be defective by inspector B but not by inspector A?” is broken down into a number of easy to follow steps, and 148 words. Probability and Statistics for Engineers and the Scientists was written by and is associated to the ISBN: 9780321629111. The full step-by-step solution to problem: 19E from chapter: 2 was answered by , our top Statistics solution expert on 05/06/17, 06:21PM. Since the solution to 19E from 2 chapter was answered, more than 621 students have viewed the full step-by-step answer.

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