Bad neck and shoulder posture in seated office workers can lead to upper-body musculoskeletal disorders. Consequently, techniques have been developed to quantify neck and upper extremity postures. Human Factors (November 2019) investigated the reliability of using wireless motion sensors to measure upper-body posture positions. The study included 31 full-time office workers seated for one hour at their desk or workstation. (None of the office workers had a history of upper-body musculoskeletal disorders.) One variable measured for each worker was the percentage of time the head or neck stayed in a neutral position. Summary statistics for the 31 workers are shown in the table. Suppose the researchers hope to use this information to establish a baseline mean for good head and neck posture. Would a baseline mean of 55% be possible for good head posture? Good neck posture? Explain.