Question: 9 Based on a manager's observations, a milling machine appears to be idle approximately 30 per- cent of the time. Develop a work-sampling plan to

9 Based on a manager's observations, a milling machine appears to be idle approximately 30 per- cent of the time. Develop a work-sampling plan to determine the percentage of idle time, accu- rate within a 3 percent error (3%) with a 95 percent confidence level. Use the random numbers from Appendix B to derive the first day's sampling schedule (assume that the sample will take place over 60 days and that an eight-hour shift is used from 8:00 to 12:00 and 1:00 to 5:00).

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