Twenty-nine 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 73 sec,
what does df denote, and what is its value? What does df denote?
A.The sample standard deviation
B.The number of degrees of freedomYour answer is correct.
C. The test statistic
D.The sample size
correct answer B
The value of df is 28.
(Type an integer or a decimal. Do not round.