Problem 904

For the study described below, identify the population parameter.

A researches 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 answers to a number of questions. The average stress rating for the 275 nurses was determined.

 

Solution:-

 

The average stress rating for all emergency-room nurses in the U.S

 

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