Use tolerance limit calculation as basis for your judgment

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Reference no: EM13720694

A random sample of 12 shearing pins is taken in a study of the Rockwell hardness of the pin head. Measurements on the Rockwell hardness are made for each of the 12, yielding an average value of 48.50 with a sample standard deviation of 1.5. Assuming the measurements to be normally distributed, the manufacturer of the shearing pins insists that the Rockwell hardness of the product to be less than or equal to 44.0 only 5% of the time. What is your reaction? Use a tolerance limit calculation as the basis for your judgment. Show Minitab instructions if possible.

Reference no: EM13720694

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Use tolerance limit calculation as basis for your judgment : A random sample of 12 shearing pins is taken in a study of the Rockwell hardness of the pin head. Measurements on the Rockwell hardness are made for each of the 12, yielding an average value of 48.50 with a sample standard deviation of 1.5.

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