(Solution) - The upper specification limit for the resistance of coils is -(2025 Original AI-Free Solution)

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The upper specification limit for the resistance of coils is 30 ?. The distribution of coil resistance is known to be normal with a standard deviation of 5 ?. It is preferred to reject batches that have a mean of 2.3 standard deviations below the upper specification limit no more than 5% of the time. Also, batches that have a mean of 1 standard deviation below the upper specification should be accepted no more than 8% of the time. Find the parameters of a variable sampling plan and describe its operation.