Question

Hospital management wants to determine the number of employees who ride the free shuttle bus to work. Which of the following would be the best method to obtain a random sample of the employees to be surveyed?(1 point)
Responses

selecting all the hospital’s nurses
selecting all the hospital’s nurses

selecting five employees from each department who volunteer to participate
selecting five employees from each department who volunteer to participate

selecting every tenth employee that enters the building
selecting every tenth employee that enters the building

selecting all employees who do not own a car

Answer 1

Selecting every tenth employee that enters the building.

Reason: this is a form of systematic sampling that, if the entry order is not related to shuttle-riding behavior, produces a reasonably random sample. The other choices are biased: only nurses or only those without cars are not representative, and volunteers introduce self-selection bias.