Question Eight A. If a company wanted to know whether to implement a new management- training program based on how much it would improve ROI (return on investment) in its new branch, would you recommend a eld or lab experiment? Explain why. B. Indicate whether the following measures use a nominal, ordinal, interval, or ratio scale: a. Prices on the stock market b. Marital status, classied as \"married\" or \"never married\" 0. A yeso question asking whether a respondent has ever been unemployed d. Professorial rank: assistant professor, associate professor, or professor e. Grades: A, B, C, D, or F