Sixteen different video games showing drug use were observed. The duration times of drug use in seconds) were recorded. When using this sample for at test of the claim that the population mean is greater than 74 sec, what does af denote, and what is its value? What does af denote? A. The sample size B. The test statistic c. The number of degrees of freedom D. The sample standard deviation The value or aris ( (Type an integer or a decimal. Do not round.)