Twenty-one different video games showing violence were observed. The duration times of violence ​(in seconds) were recorded. When using this sample for a t test of the claim that the population mean is greater than 77 ​sec, what does df​ denote, and what is its​ value? What does df​ denote? A. The sample standard deviation B. The sample size C. The number of degrees of freedom D. The test statistic The value of df is enter your response here. ​(Type an integer or a decimal. Do not​ round.)

Q: Direction:

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