Over time it has been demonstrated that workers at a state agency process on average (mean) 75 cases per year, with a standard deviation of 6 and that the distribution of case processing is normal. a. What percentage of workers would you expect to process between 75 and 81 cases per year? Interpret your finding. b. What percentage of workers would you expect to process fewer than 75 cases per year? Interpret your finding. c. What percentage of workers would you expect to process more than 81 cases per year? Interpret your finding