This Question: 2 pts 9 of 15 (7 complete) This Quiz: 30 pts In statistics, what

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This Question: 2 pts 9 of 15 (7 complete) This Quiz: 30 pts In statistics, what does df denote? If a simple random sample of 22 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 mih, what is the specific value of d? Choose the correct answer below O A. df denotes the number of degrees of freedom. For this sample, df 21. O B. df denotes the distribution of freedom. For this sample, df 22 O C. df denotes the distribution of freedom. For this sample, df 21 0 D. df denotes the number of degrees of freedom. For this sample, df-22 Click to select your answer Previous 4:0 10/27/2017

Explanation / Answer

ANSWER:-

OPTION A is correct.

df denotes the number of degrees of freedom. For this sample df = 21

EXPLANATION:-

Degree of freedom is defined as number of independent values or quantities which can be assigned to a statistical distribution.

If there are N values in data set then df = N-1

Here given N = 22 , so df = 22 - 1 = 21

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