Scores on an IQ test are normally distributed. A sample of 25 IQ scores had variance s

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Scores on an IQ test are normally distributed. A sample of 25 IQ scores had variance s² = 64. The developer of the test claims that the population variance is σ² = 225. Do these data provide sufficient evidence to contradict this claim?

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Statistics For Engineers And Scientists

ISBN: 9780073401331

4th Edition

Authors: William Navidi

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Question Posted: Nov 09, 2018 10:04 AM

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Scores on an IQ test are normally distributed. A sample of 25 IQ scores had variance s

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