A Researcher Reports "The Average Patron (N = 22)in a Local

Multiple Choice

A researcher reports "the average patron (n = 22) in a local bar consumed more than twice the number of drinks (per day) on weekends (M = 5.4 drinks) compared to weekdays (M = 2.3 drinks) ." Although not stated directly,how do we know that the patrons in this study constitute a sample and not a population of patrons at this local bar?

A) We can't know for sure because this was not stated directly.
B) The notation for a sample mean was used.
C) The notation for a sample size was used.
D) Both the notation for a sample mean was used and the notation for a sample size was used.