1. The mean pulse rate​ (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 129 adult males

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1. The mean pulse rate​ (in beats per minute) of
adult males is equal to 69 bpm. For a random sample of 129 adult
males, the mean pulse rate is 68.5 bpm and the standard deviation
is 10.9 bpm. Find the value of the test statistic.
2. Thirty- Five different video games showing drug use were
observed. The duration times of drug use ​(in 71 seconds) were
recorded. When using this sample for a t test of the claim that the
population mean is greater than 71 ​sec, what does df​ denote,
and what is its​ value?
A. What does df​ denote?
-
B. The value of df is enter your
response here _.