1. Low back pain is a common work-related musculoskeletal disorder. German scientists conducted a study to find out if some occupations are associated with higher rates of low back pain than others'. As a part of their study, they surveyed a random sample of 371 office workers and 202 nurses and orderlies. 34.3% of the office workers and 43.0% of the nurses/orderlies said they had experienced low back pain during the last seven days. a. Conduct a hypothesis test by following the Prepare, Check, Calculate, and Conclude steps to determine if there is a difference in the rate of low back pain between these occupations. Use a = 0.05. b. Follow the Prepare, Check, Calculate, and Conclude steps to determine and interpret the 95% confidence interval for the difference in low back pain rates between office workers and nurses