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IQ tests The Wechsler Adult Intelligence Scale (WAIS) is a

The Practice of Statistics | 4th Edition | ISBN: 9781429245593 | Authors: Daren S. Starnes; Dan Yates; David S. Moore ISBN: 9781429245593 85

Solution for problem R7.6 Chapter 7

The Practice of Statistics | 4th Edition

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The Practice of Statistics | 4th Edition | ISBN: 9781429245593 | Authors: Daren S. Starnes; Dan Yates; David S. Moore

The Practice of Statistics | 4th Edition

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Problem R7.6

IQ tests The Wechsler Adult Intelligence Scale (WAIS) is a common IQ test for adults. The distribution of WAIS scores for persons over 16 years of age is approximately Normal with mean 100 and standard deviation 15. (a) What is the probability that a randomly chosen individual has a WAIS score of 105 or higher? Show your work. (b) Find the mean and standard deviation of the sampling distribution of the average WAIS score x for an SRS of 60 people. (c) What is the probability that the average WAIS score of an SRS of 60 people is 105 or higher? Show your work. (d) Would your answers to any of parts (a), (b), or (c) be affected if the distribution of WAIS scores in the adult population were distinctly non-Normal? Explain. s Use the central limit theorem to help find probabilities involving a sample mean x .

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Chapter 7, Problem R7.6 is Solved
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Textbook: The Practice of Statistics
Edition: 4
Author: Daren S. Starnes; Dan Yates; David S. Moore
ISBN: 9781429245593

This full solution covers the following key subjects: wais, score, mean, distribution, adult. This expansive textbook survival guide covers 12 chapters, and 105 solutions. This textbook survival guide was created for the textbook: The Practice of Statistics, edition: 4. The full step-by-step solution to problem: R7.6 from chapter: 7 was answered by , our top Statistics solution expert on 09/04/17, 10:29PM. The answer to “IQ tests The Wechsler Adult Intelligence Scale (WAIS) is a common IQ test for adults. The distribution of WAIS scores for persons over 16 years of age is approximately Normal with mean 100 and standard deviation 15. (a) What is the probability that a randomly chosen individual has a WAIS score of 105 or higher? Show your work. (b) Find the mean and standard deviation of the sampling distribution of the average WAIS score x for an SRS of 60 people. (c) What is the probability that the average WAIS score of an SRS of 60 people is 105 or higher? Show your work. (d) Would your answers to any of parts (a), (b), or (c) be affected if the distribution of WAIS scores in the adult population were distinctly non-Normal? Explain. s Use the central limit theorem to help find probabilities involving a sample mean x .” is broken down into a number of easy to follow steps, and 148 words. The Practice of Statistics was written by and is associated to the ISBN: 9781429245593. Since the solution to R7.6 from 7 chapter was answered, more than 444 students have viewed the full step-by-step answer.

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