I need help with these four questions ASAP please

Which of the following about Just-in-time (JIT) production is NOT true? JIT production creates less production waste O JIT production can improve the flow of products O JIT implies high customer satisfaction since it aims at making items based on customer demand. O JIT production is able to adapt well to a sudden increase in demand. What is the difference between a push system and a pull system? A push system favors running a machine, even if there exists no demand for it. In a pull system, the last resource is paced directly by demand. Generally, there will be less inventory in a pull system. O All of the above. A copy machine is available 24 hours a day. On a typical day, the machine produces 300 jobs. Each job takes about 3 minutes on the machine, 2 minutes of which is processing time and 1 minute is setup time (logging in, defining the job). About 20 percent of the jobs need to be reworked, in which case the setup time and the processing time have to be repeated. The remainder of the time, the equipment is idle. What is the OEE of the equipment? (round up to three decimal places). Money spent training an employee how to do the job mistake free is an example of an external failure costs O internal failure costs appraisal costs O prevention costs