A manual assembly line is to be designed for a certain major appliance whose assembly work content time = 2.0 hr. The line will he designed for an annual production rate of 150.001) units. The plant will operate one 10-hr shift/day. 250 day/yr. A continuous convey-or system will be used, and it will operate at a speed = 1.6 m/min. The line must be de-signed under the following assumptions: balance delay = 6.5%, uptime efficiency = 96%, repositioning time = 6 sec for each worker, and average manning level = 1.25. (a) How many workers will he required to operate the assembly line? If each station is 2.0 m long, (h) how long will the production line be, and (c) what is the elapsed time a work unit spends on the line? (d) What is the labor efficiency on the assembly line?