11 24 Problem 6: The intensive care unit lab process has an average turnaround time of 26.2 minutes and a standard deviation of 1.35 minutes The nominal for this service is 25 minutes with an upper specification limit of 30 minutes and a lower specification limit of 20 minutes The administrator of the lab wants to have four-sigma performance for her lab. Is the lab process capable of this level of performance? Modifications made to the process resulted in the average turnaround of 26.1 minutes with a standard deviation of 1.20 minutes. Is the process capable now? Problem 6: Develop an OC curve for a sampling plan of n=40, c=1. If AQL is 2%, what is the producer’s risk? If LTPD is 9% what is the consumer’s risk? For an incoming lot defectives of 5%, what is the AOQ value? Let N = 1000. Develop a AOQ curve and determine the AOQL. Pd nPd Pa AOQ 1% 2% 3% 4% 5% 6% 7% 8%
11 24 Problem 6: The intensive care unit lab process has an average turnaround time of 26.2 minutes and a standard deviation of 1.35 minutes The nominal for this service is 25 minutes with an upper specification limit of 30 minutes and a lower specification limit of 20 minutes The administrator of the lab wants to have four-sigma performance for her lab. Is the lab process capable of this level of performance? Modifications made to the process resulted in the average turnaround of 26.1 minutes with a standard deviation of 1.20 minutes. Is the process capable now? Problem 6: Develop an OC curve for a sampling plan of n=40, c=1. If AQL is 2%, what is the producer’s risk? If LTPD is 9% what is the consumer’s risk? For an incoming lot defectives of 5%, what is the AOQ value? Let N = 1000. Develop a AOQ curve and determine the AOQL. Pd nPd Pa AOQ 1% 2% 3% 4% 5% 6% 7% 8%
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