Speeds for a sample of nine cars were measured by radar along a stretch of highway. The

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Speeds for a sample of nine cars were measured by radar along a stretch of highway. The results, in miles per hour, were as follows. Assume that the population of speeds is normally distributed.image text in transcribed

Can you conclude that the population standard deviation is greater than 2? 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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