In statistics, what does df denote? If a simple random sample of 20 speeds of cars on

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In statistics, what does df denote? If a simple random sample of 20 speeds of cars on California Highway 405 is to be used to test the claim that the sample values are from a population with a mean greater than the posted speed limit of 65 mi/h, what is the specific value of df?

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Elementary Statistics

ISBN: 9780321500243

11th Edition

Authors: Mario F. Triola

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