12. Chapter 9, Problem 28 How important is physical strength to job performance? David Lane at Rice University presents a study of 147 workers in physically demanding jobs. [Lane, D. (2008). Physical strength and job performance. Rice University Virtual Lab in Statistics. Retrieved May 16, 2013, from http://onlinestatbook.com/case_studies_rvls/physical_strength/index.html] Data similar to Lane's are shown for 25 subjects in the following table. For each worker, physical measurements of arm strength (ARM) and grip strength (GRIP) are listed, along with a measure of performance on a simulated physical task (SIMS) and the worker's actual job performance as rated by the worker's supervisor (RATINGS) on a 60-point scale