A company wants to enhance the benefits for its yearly healthcare package offering. It observes the set of employees who smoke on their break times at 10 a. m., 12 p. m., and 2 p. m. It records the number of cigarettes smoked by each individual. This is an example of:
a)an experiment with no placebo.
b)a randomized study.
c)a controlled experiment.
d)an observational study.
d)an observational study.
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A company wants to enhance the benefits for its yearly healthcare package offering. It observes the...
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