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# Out of 1000 welds that have been made on a tower, it is

ISBN: 9780321923271 41

## Solution for problem 13E Chapter 7.4

Probability and Statistical Inference | 9th Edition

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Problem 13E

PROBLEM 13E

Out of 1000 welds that have been made on a tower, it is suspected that 15% are defective. To estimate p, the proportion of defective welds, how many welds must be inspected to have approximately 95% confidence that the maximum error of the estimate of p is 0.04?

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Elements of Statistics – Chapter 7 Notes Sampling Error  An error that occurs when we use sampes to estimate a population characteristic  The DIFFERENCE between the POPULATION NUMERICAL INFORMATION and the SAMPLE NUMERICAL INFORMATION Sampling Distribution  Choosing a sample from the original population Sample Illustrative Example EX.1) You have a population of 4 people who gave the number of meals they ate per day : 1, 3, 5, 7 SUBJECTS A B C D # OF 1 3 5 7 MEALS PER DAY SAMPLE DISTRIBUTION with a sample size of 2 A + B  1 + 3 A + C  1 + 5 A + D  1 + 7 List of all B + C 

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##### ISBN: 9780321923271

This full solution covers the following key subjects: welds, estimate, defective, made, Error. This expansive textbook survival guide covers 59 chapters, and 1476 solutions. The full step-by-step solution to problem: 13E from chapter: 7.4 was answered by , our top Statistics solution expert on 07/05/17, 04:50AM. This textbook survival guide was created for the textbook: Probability and Statistical Inference , edition: 9. Probability and Statistical Inference was written by and is associated to the ISBN: 9780321923271. The answer to “Out of 1000 welds that have been made on a tower, it is suspected that 15% are defective. To estimate p, the proportion of defective welds, how many welds must be inspected to have approximately 95% confidence that the maximum error of the estimate of p is 0.04?” is broken down into a number of easy to follow steps, and 48 words. Since the solution to 13E from 7.4 chapter was answered, more than 329 students have viewed the full step-by-step answer.

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Out of 1000 welds that have been made on a tower, it is