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From 20 Samples of Size 100,a Total of 80 Units

question 7

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From 20 samples of size 100,a total of 80 units are defective.What is the centerline for the p chart?


Definitions:

Gray Iron

A type of cast iron known for its graphitic microstructure, offering good machinability, conductivity, and wear resistance.

Resistance

The opposition to the flow of electric current, or, in a broader sense, the opposition encountered by a force.

Solid Castings

Metal objects formed by pouring molten metal into molds without any hollow portions, resulting in a solid, uniform structure.

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