1. You are the health and safety manager for a company with two manufacturing plants. Each plant recently compiled their records from the past year for injuries that required time off work, and injuries that required hospitalization. A summary of the results are below: Plant Number of Number of Rate of Injuries RR AR Employees injuries requiring time off (per thousand) requiring time work (per thousand) off work . 2,033 12 ? Ref Ref B 1,212 8 ? ? ? Note: Uso plant A as the reference group. (The rate of reference Grou should always be in the denominator when calculating RR. When calculating AR, rate of reference group should be the second term in the subtraction Complete the table above. b) Provide an interpretation of RR and AR. (In another word, what does RR and AR mean in this context?) c) Which plant has a worse problem in terms of injuries in 2010