11.4. For the length of a spring under a compressive force of 50 kg, there is set...

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11.4. For the length of a spring under a compressive force of 50 kg, there is set minimum limit of 10.0 cm. Assume that sx¼0.2 cm, and that the distribution of the x’s is normal.

Set m¼m1¼10.4cm as the RQL and m¼m2¼10.6 cm as the AQL, and take risks of b¼a¼0.05. Find a sampling plan for the test and sketch the OC curve Pa vs. m, labeling axes.

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