Question: A production process operates with a constant 0.01% nonconforming output. Every hour a random sample of 100 units is taken from this process and evaluate.
A production process operates with a constant 0.01% nonconforming output. Every hour a random sample of 100 units is taken from this process and evaluate. If more than 1 nonconforming unit is found in this sample the process is stopped and quality engineering personnel search for the cause of excessive nonconforming production. What is the probability that a sample contains 1 or more nonconforming units? What is the probability that a sample contains exactly 1 nonconforming unit? What do you think of this procedure? If this process operates with a constant 0.01% nonconforming rate of output for 8 hours each day, what is the probability that the process will be stopped over the next 4 weeks (20 days) when the percent nonconforming has not changed?
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