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.

Question

Quizplus · Accepted Answer

The use of "n = 22" indicates a sample size, and "M" is commonly used to denote the mean of a sample, suggesting that the data comes from a sample rather than the entire population of patrons.

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