Part 2 of 2 Points: 0 of 1 Save (X Twenty-six 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 78 sec, what does df denote, and what is its value? . .. .. What does df denote? O A. The sample standard deviation O B. The sample size c. The number of degrees of freedom In O D. The test statistic The value of df is (Type an integer or a decimal. Do not round.)