Amanual assembly line is being planned for a product whose annual demand = 9 units. a continuously moving conveyor will be used with work units attached. work content time = 55 min. the line will run 50 wk/yr, 5 shifts/wk, and 8 hr/shift. each worker will be assigned to a separate workstation. based on previous experience, assume line efficiency = 0.95, balancing efficiency = 0.93, and repositioning time = 9 sec. determine: a. hourly production rate to meet the demand, b. number of workers and work station required, and c. for comparison, the ideal minimum number of workstations required (theoretical).