Question: Question 11 (2 points) A design engineer wants to construct a sample mean chart for controlling the service life of one of the types of

Question 11 (2 points) A design engineer wants to construct a sample mean chart for controlling the service life of one of the types of light bulbs his company produces. On three recent production batches, he tested service life on random samples of four bulbs, with these results (see the table). The upper and lower control limits are: Sample 2 3 495 525 470 500 515 480 505 505 460 500 515 470 UCL= 508.7 and LCL= 479.6 UCL= 505.1 and LCL= 481.3 UCL= 511.2 and LCL= 476.5 UCL=502.4 and LCL= 469.8 E. Neither of above Question 13 (2 points) The utilization of a machine is 50%. The machine has a design capacity of 80 units per hour and an effective capacity of 50 units per hour. Find the efficiency of the machine. 80% 180% 20% 120% 100%

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