A foreman thinks that the low efficiency of the machine tool operators is directly linked to the high level

of fumes emitted in the workshop. He would like to prove this to his supervisor through a research study.

1. Would this be a causal or a correlational study? Why?

2. Is this an exploratory, a descriptive, or a causal study? Why?

3. What kind of a study would this be: field study, lab experiment, or field experiment? Why?

4. What would be the unit of analysis? Why?

5. Would this be a cross]sectional or a longitudinal study? Why?