In statistics, what does df denote? If a simple random sample of 16 speeds of ca

Question

In statistics, what does df denote? If a simple random sample of 16 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? Choose the correct answer below. A. df denotes the distribution of freedom. For this sample, df = 16. B. df denotes the number of degrees of freedom. For this sample, df = 16. C. df denotes the distribution of freedom. For this sample, df = 15. D. df denotes the number of degrees of freedom. For this sample, df = 15.

Explanation / Answer

as we know df =degree of freedom =sample size -1 =16-1=15

therefore option D is correct.

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