In statistics, what does df denote? If a simple random sample of 19 speeds of ca

Question

In statistics, what does df denote? If a simple random sample of 19 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 number of degrees of freedom. For this sample, df = 18. B. df denotes the distribution of freedom. For this sample. df = 18. C. df denotes the distribution of freedom. For this sample, df = 19. D. df denotes the number of degrees of freedom. For this sample. df = 19.

Explanation / Answer

The term 'df' means degrees of freedom

It is given by df = n-1, where n is the sample size

So,

A) df denotes the number of degrees of freedom. For this sample, df = 18

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