Scores on an IQ test are normally distributed. A sample of 25 IQ scores had standard deviation

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Scores on an IQ test are normally distributed.

A sample of 25 IQ scores had standard deviation s = 8.

The developer of the test claims that the population standard deviation is σ = 15.

Do these data provide sufficient evidence to contradict this claim? Use the α = 0.05 level of significance.

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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Question Posted: May 08, 2024 03:02 AM

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Scores on an IQ test are normally distributed. A sample of 25 IQ scores had standard deviation

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Elementary Statistics

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