What is the answer?

This Question: 2 pts tic Twenty different video games showing drug use were observed. The duration times of drug use (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 of denote, and what is its value? What does of denote? O A. The number of degrees of freedom O B. The sample standard deviation O C. The test statistic O D. The sample size The value of df is (Type an integer or a decimal. Do not round.) Click to select your answer(s). ? ON 27 V Next Qu NT 1 7 4 9