Solve the problem.
-For the study described below, identify the population parameter. A researcher is interested in the level of stress among emergency-room nurses in the U.S. 275 emergency-room nurses were interviewed to determine their level of stress. Each nurse was assigned a stress rating based on his or her answers to a number of questions. The average stress rating for the 275 nurses was determined.
A) The average stress rating for the 275 emergency-room nurses interviewed
B) The average stress rating for all emergency-room nurses in the U.S.
C) All emergency-room nurses in the U.S.
D) The average stress rating for all emergency-room nurses in the world

Question

Quizplus · Accepted Answer

The population parameter refers to the characteristic or measure that the researcher is interested in estimating or understanding for the entire population. In this case, the researcher is interested in the level of stress among all emergency-room nurses in the U.S., making the average stress rating for all emergency-room nurses in the U.S. the correct population parameter.

Solve the Problem. -For the Study Described Below, Identify the Population Parameter. a Population