A situation is given below. For the situation, respond to the following research design questions.

A researcher wants to test the theory that low levels of oxygen in the mines is the single most important factor that tires the miners easily.

a. What would be the nature of the study that would be designed - Exploratory, descriptive, or hypothesis-testing?

b. Give reasons for your answer to (a) above.

c. Would it be a Field study, Comparative study, Lab experiment or Field experiment?

d. Would it be a causal or correlational study?

e. Justify the reasons for your answer to (d).

f. Would it be a longitudinal or cross-sectional study?

g. How would you explain your answer to (f) above?

h. What would be the unit of analysis?

i. Defend your answer to (h) above