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Solved: Researchers at George Washington University and

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 6.28 Chapter 6

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 6.28

Researchers at George Washington University and the National Institutes of Health claim that approximately 75% of people believe tranquilizers work very well to make a person more calm and relaxed. Of the next 80 people interviewed, what is the probability that (a) at least 50 are of this opinion? (b) at most 56 are of this opinion?

Step-by-Step Solution:

Q: Researchers at George Washington University and the National Institutes of Health claim thatapproximately 75% of people believe tranquilizers work very well to make a person more calmand relaxed. Of the next 80 people interviewed, what is the probability that (a) at least 50 are ofthis opinion (b) at most 56 are of this opinion Step By Step SolutionStep 1 of 3:Given:Given:Number of people interviewed:Probability of people believing tranquilizers will work:Mean:Standard deviation:

Step 2 of 3

Chapter 6, Problem 6.28 is Solved
Step 3 of 3

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

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Solved: Researchers at George Washington University and